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What Does "Kidney Deficiency" Actually Mean? — What the TCM "Kidney" Governs, and Why It Is Not Your Kidneys

「肾虚」到底是什么？中医理论里的「肾」管什么、为什么不是您的肾脏

In TCM theory the "kidney" is a functional system — the WHO's TCM terminology standard defines the kidney system as composed of the kidney, urinary bladder, bones, hair, ears, urethra, anus and kidney meridian. It governs essence, reproduction, water, bones and hair, the ears and the depth of breathing. "Kidney deficiency pattern" is the name of a pattern; the standard's description mentions that it often results from congenital deficiency, postnatal over-exertion or chronic diseases, and the same section lists more than one kidney pattern. This part covers what the word means inside the theory, why it is not the two organs on a blood test, and why bones sit under it. An aching back is part 2, the report and the tonic packet part 3, when to see a doctor part 4.

中医理论里的「肾」是一个功能系统——世卫的中医术语标准把「肾系」定义为由肾、膀胱、骨、发、耳、尿道、肛门与肾经组成。它管的是精、生殖、水液、骨与发、耳、呼吸的深度。「肾虚证」是一个证的名称，标准的说明提到此证常由先天不足、后天过劳或慢性疾病所致，而同一节列出的肾证不止一个。这一篇说清楚这个词在理论里指什么、为什么它不是验血报告上的那两颗器官、骨头为什么会挂在「肾」底下。腰酸的事在第 2 篇，报告与补肾丸在第 3 篇，什么时候要先看医生在第 4 篇。

Mr. Lim Gao HongSeptember 202612 min read12 分钟

Part 1 of 4 in the kidney series. Part 2 is what an aching back has to do with the "kidney"; part 3 is the blood test and the tonic packet; part 4 is when to see a doctor and what a consultation does.

"Do I have kidney deficiency?" It is a question that comes up often — and the term circulates locally through advertising, short videos and word of mouth, not through TCM texts.

This part answers one thing: what the word means inside TCM theory.

The short version

The TCM "kidney" is a functional system: the WHO's TCM terminology standard says the kidney system is composed of the kidney, urinary bladder, bones, hair, ears, urethra, anus and kidney meridian.
Six things sit under it — essence, reproduction, water, bones and hair, the ears, the depth of breathing — each with its own entry in that standard.
So it and the two organs on a report are different orders of thing, and do not translate into each other.
"Kidney deficiency pattern" is a pattern name; the standard's description mentions it often results from congenital deficiency, postnatal over-exertion or chronic diseases. The same section lists more than one kidney pattern, so "just tonify" does not follow.
「肾虚」 is a practitioner's word after assessment, not a reader's self-label — the standard's description of the pattern says nothing about age and nothing about sex.

First, the things that cannot wait

Persistent flank pain, particularly with fever — call 999 now, or go to the nearest hospital emergency department. The NHS's kidney infection page lists a high temperature and pain in the lower back or side among its symptoms, and states it can be serious if untreated.

Blood in the urine or a marked change in colour, persistently foamy urine that does not settle, swelling around the eyes or in the lower legs, a marked increase or decrease in how much you pass — see a doctor first. Blood in your pee must be checked out because it can be a sign of cancer — that is the NHS.

The reason for each, and the full list, are in part 4. TCM and Western medicine complement each other; it is not a choice between them.

A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.

I. The TCM "kidney" is not your two kidneys

This is the source of every other misunderstanding.

In TCM theory, 「肾」 names not an organ but a set of functions. The WHO's TCM terminology standard defines the kidney system (肾系) as a functional system composed of the kidney, urinary bladder, bones, hair, ears, urethra, anus and kidney meridian. The kidney of modern anatomy is a different order of thing — an organ visible on a scan, assessable by blood test.

The two do not translate into each other. One being normal does not mean the other is; one being abnormal does not mean the other must be. Testing the organ does not go through the TCM concept either — what the kidney items on a report measure is part 3.

💡 Remember: when you hear the word, first work out whether it refers to the TCM functional system or to the two organs in your body.

II. What the "kidney" governs, and what "kidney deficiency" is

Everything below is TCM theory, with the definitions taken from the WHO's 2022 standard terminology.

The kidney stores essence (肾藏精). The kidney stores and secures the essence of the human body — the standard's own words. Kidney essence (肾精) is the essence stored in the kidney, inherited from one's parents and nourished by water and food, the foundation of the physiological activities of the kidney. Theory therefore calls the kidney the congenital foundation (先天之本): that inherited kidney essence is fundamental to growth and reproduction.

The kidney governs reproduction (肾主生殖). Kidney essence and qi boost the maturity of reproductive organs and maintain reproductive ability. The standard's entry does not distinguish between men and women.

The kidney governs water and fluids (肾主水液). The kidney governs and regulates water metabolism — so urine and body fluids fall under this set of functions too.

The kidney governs the bones, generates marrow, and its lustre shows in the hair. Kidney essence generates marrow to nourish bones; the colour and lustre of hair manifest the functioning of the kidney.

The kidney opens into the ears, and into the urethra and anus. The ears are nourished by kidney essence and qi and are the opening orifice of the kidney; the kidney secures essence and dominates the urethra and anus.

The kidney governs the reception of qi (肾主纳气). The kidney receives and holds the clear qi inhaled by the lung to maintain the depth of breathing. A further entry says the emotion of the kidney is fear: fear is associated with the kidney.

That is the scope of 「肾」 in the theory: essence, reproduction, water, bones and hair, the ears, the depth of breathing. Does the "kidney" in the advertisement match those six, or is only "one particular use" left — those six are the yardstick. Why bones, hair and the lower back share one list is part 2, which starts from two of the standard's own entries.

And 「肾虚」? 「肾虚证」 in the same standard is the name of a pattern, and its description mentions: this pattern often results from congenital deficiency, postnatal over-exertion or chronic diseases. The standard lists it under "patterns of the kidney system", and it is one of several — the same section also lists kidney qi deficiency, kidney yin deficiency, kidney yang deficiency and kidney essence deficiency patterns.

That is why "just tonify" does not follow: which pattern applies is the practitioner's judgement after seeing the whole picture, and the method of tonifying follows that judgement — not the other way round.

These words belong after a consultation. The same presentations can point to different patterns in the theory, so the term is a practitioner's word after assessment, not a label for a reader to match against themselves. A forwarded self-test is a starting point for a question, not a conclusion — bring the screenshot to a consultation instead.

💡 Remember: the TCM 「肾」 governs essence, reproduction, water, bones and hair, the ears, the depth of breathing; 「肾虚」 is a pattern name a practitioner reaches after assessment, not an advertising slogan.

The words in this part

All five come from the WHO's TCM terminology standard.

Kidney system (肾系) — the functional system composed of the kidney, urinary bladder, bones, hair, ears, urethra, anus and kidney meridian. "The TCM kidney" means this.
Kidney essence (肾精) — the essence stored in the kidney, inherited from one's parents and nourished by water and food, the foundation of the kidney's physiological activities.
The kidney stores essence (肾藏精) — the kidney stores and secures the essence of the human body; where the whole set starts.
The kidney governs water and fluids (肾主水液) — the kidney governs and regulates water metabolism. Urine and body fluids fall under this set of functions in the model.
Kidney deficiency pattern (肾虚证) — a pattern name listed under "patterns of the kidney system"; its description mentions it often results from congenital deficiency, postnatal over-exertion or chronic diseases. A practitioner uses it after assessment, and you may hear it at a consultation.

Frequently asked

Do all middle-aged men have kidney deficiency? No. The standard's description of 「肾虚证」 mentions congenital deficiency, postnatal over-exertion or chronic diseases, and says nothing about age and nothing about sex. It is a practitioner's judgement after assessment, not a label for an age group. Tying it to middle-aged men is local advertising's usage. The term often comes up alongside tiredness and low energy in men: how TCM looks at tiredness and low energy in men.

Can women be told they have kidney deficiency too? Yes. The TCM 「肾」 governs essence, reproduction, water, bones and hair, the ears and the depth of breathing, and the standard's entries do not distinguish between men and women. Whether it is that pattern is, again, the practitioner's assessment. If you are pregnant, trying to conceive or breastfeeding, tell your doctor and your practitioner before any "kidney tonic" product — part 3 has the steps.

The other three parts

👉 If you are not sure whether the "kidney deficiency" in the advertisement has anything to do with you, you are welcome to book an online consultation with HansMed, where a practitioner registered under the T&CM Act 2016 can assess it with you; if what worries you is the organ itself, or if anything in "First, the things that cannot wait" above or in part 4 applies, see a doctor for tests first.

Sit with a licensed TCM practitioner from wherever you are.

HansMed Modern TCM

For general wellness education only — not medical advice. Consult a registered TCM practitioner for personal guidance.

Sources

World Health Organization, WHO international standard terminologies on traditional Chinese medicine, 2022 — https://www.who.int/publications/i/item/9789240042322
NHS, Kidney infection, page last reviewed 13 February 2025 — https://www.nhs.uk/conditions/kidney-infection/
NHS, Blood in urine, page last reviewed 25 September 2026 — https://www.nhs.uk/symptoms/blood-in-urine/

本文是「肾虚与肾脏」系列的第 1 篇，共 4 篇。第 2 篇讲腰酸跟「肾」的关系，第 3 篇讲验血报告与补肾丸怎么查，第 4 篇讲什么时候要先看医生、看诊会做什么。

「医师，我是不是肾虚？」不少读者常问这句话——而这个词在本地主要透过广告、短视频与朋友之间流传，不是透过中医文献。

这一篇只回答一件事：这个词在中医理论里到底指什么。

一分钟看完

中医理论里的「肾」是一个功能系统：世界卫生组织的中医术语标准说，「肾系」由肾、膀胱、骨、发、耳、尿道、肛门与肾经组成。
它管六项：精、生殖、水液、骨与发、耳、呼吸的深度，每一项标准里都有词条。
所以它和报告上那两颗器官是两个层次的东西，不能互相翻译。
「肾虚证」是一个证名，标准的说明提到此证常由先天不足、后天过劳或慢性疾病所致；同节的肾证不止一个，所以「补就对了」不成立。
「肾虚」是医师辨证后的用语，不是读者的自我标签——标准对这个证的说明里没有年龄，也没有性别。

先说不能等的几件事

腰部持续疼痛，尤其伴随发烧——请立刻拨打 999，或前往最近的医院急诊部。NHS 的肾脏感染页写明，发烧与腰侧或下背的疼痛都在肾脏感染的症状里，不治疗可能变得严重。

小便带血或颜色明显改变，小便有大量泡沫久久不散，眼睑或下肢水肿，小便量明显变多或变少——请先就医。尿里带血一定要检查，因为它可能是癌症的征兆——这是 NHS 写的。

每一项的理由与完整清单，见第 4 篇。中医与西医是互相补位的关系，不是二选一。

小提醒：本段仅为一般知识说明。相关情况请以西医的诊断与治疗为主，并在需要时及时就医。

一、中医的「肾」，不是您的那两颗肾脏

这是所有误会的源头。

在中医理论里，「肾」不是器官的名字，是一组功能的名字。世界卫生组织的中医术语标准把肾系定义为一个功能系统：由肾、膀胱、骨、发、耳、尿道、肛门与肾经组成。现代解剖学里的肾脏是另一个层次的东西——可以在影像上看见、可以验血评估的器官。

两者不能互相翻译。 一个正常，不代表另一个也正常；一个异常，也不代表另一个一定异常。肾脏的检查也不走中医「肾」这个概念——报告上的肾脏项目量什么，第 3 篇说。

💡 记住：听到「肾」这个字，先分清楚是在讲中医的功能系统，还是在讲您身体里的那两颗器官。

二、「肾」管什么，「肾虚」又是什么

以下每一条都是中医理论的说法，定义取自世界卫生组织 2022 年的中医术语标准。

肾藏精。 肾贮藏并固摄人体的精——这是标准的原句。肾精是藏于肾的精，禀受于父母、由饮食水谷所养，是肾生理活动的基础。理论因此称肾为先天之本：禀受于父母的肾精，是生长与生殖的根本。

肾主生殖。 肾精与肾气促使生殖器官成熟、维持生殖能力。标准的这一条没有区分男女。

肾主水液。 肾主管并调节水液代谢——所以在理论的模型里，小便与水液的事也归在这一组功能名下。

肾主骨、生髓，其华在发。 肾精生髓以养骨；头发的色泽反映肾的功能。

肾开窍于耳与二阴。 耳受肾精肾气濡养，是肾的窍；肾固摄精，主管尿道与肛门。

肾主纳气。 肾接纳并保持肺吸入的清气，以维持呼吸的深度。标准另有一条「肾在志为恐」：恐与肾相配。

这就是「肾」在理论里管的范围：精、生殖、水液、骨与发、耳、呼吸的深度。广告与短视频里说的「肾」对得上这六项吗，还是只剩「某一方面的用途」——这六项就是一把尺。至于骨头、头发与腰为何会在同一张名单上，第 2 篇从标准自己的两条词条说起。

那「肾虚」呢？ 「肾虚证」在同一份标准里是一个证的名称，说明提到：此证常由先天不足、后天过劳或慢性疾病所致。标准把它列在「肾系证类」之下，而它只是其中之一——同一节还列有肾气虚证、肾阴虚证、肾阳虚证、肾精亏虚证等。

这正是「补就对了」不成立的原因：哪一个证成立，是医师看过整体之后的判断，补法跟着判断走，不是反过来。

这些词属于问诊之后。 同一组表现在理论里可能指向不同的证，所以它是医师辨证后的用语，不是读者拿来对照自己的标签。朋友转发的「自测表」可以当提问的起点，不要当结论——截图带去看诊时讨论就好。

💡 记住：中医的「肾」管的是精、生殖、水液、骨与发、耳、呼吸的深度；「肾虚」是医师辨证后的证名，不是一句广告词。

这篇出现的几个词

五个词都来自世界卫生组织的中医术语标准。

肾系（kidney system）——由肾、膀胱、骨、发、耳、尿道、肛门与肾经组成的功能系统。「中医的肾」指的就是这个。
肾精（kidney essence）——藏于肾的精，禀受于父母、由饮食水谷所养，是肾生理活动的基础。
肾藏精——肾贮藏并固摄人体的精；理论里这是整组功能的起点。
肾主水液——肾主管并调节水液代谢。小便与水液在这个模型里归在这组功能名下。
肾虚证（kidney deficiency pattern）——标准列在「肾系证类」下的证名，说明提到常由先天不足、后天过劳或慢性疾病所致。医师辨证后才会用这个词，您可能在看诊时听到。

常见问题

中年男人都肾虚吗？ 不是。标准对「肾虚证」的说明提到先天不足、后天过劳或慢性疾病，没有提到年龄，也没有提到性别。它是医师辨证后的判断，不是某个年龄层的标签。把它和中年男性绑在一起的，是本地广告的用法。男性的疲劳与精神不济常和这个词一起被提起，可参考：中医怎么看男性的疲劳与精神不济。

女性也会被说肾虚吗？ 会。中医理论里的「肾」管精、生殖、水液、骨与发、耳、呼吸的深度，标准的说明没有区分男女。是不是这个证，同样由医师辨证。怀孕、备孕或哺乳中的，任何「补肾」产品都先告诉医生与医师——第 3 篇有读一包药的步骤。

这个系列的另外三篇

👉 如果您不确定「广告说的肾虚，跟我有没有关系」，欢迎透过汉方中医的线上问诊，由依 2016 年 T&CM 法令注册的医师为您评估；若您担心的是肾脏本身，或有本文「先说不能等的几件事」与第 4 篇列出的情况，请先就医做检查。

无论身在何处，与持证中医师对坐。

汉方现代中医

本内容仅供健康知识分享，不构成医疗建议。如需个人化建议，请咨询注册中医师。

资料来源

世界卫生组织，WHO international standard terminologies on traditional Chinese medicine，2022 — https://www.who.int/publications/i/item/9789240042322
NHS，Kidney infection，页面最后审阅 2025 年 2 月 13 日 — https://www.nhs.uk/conditions/kidney-infection/
NHS，Blood in urine，页面最后审阅 2026 年 9 月 25 日 — https://www.nhs.uk/symptoms/blood-in-urine/