Why is Mai Jing considered so important in TCM history?

Mai Jing is the earliest surviving text to systematically organize pulse diagnosis into a comprehensive clinical framework. Before Wang Shuhe, pulse knowledge was scattered across various texts like the Huangdi Neijing. Wang Shuhe synthesized earlier knowledge, defined 24 distinct pulse types, established standardized finger positions, and created a system that remains the foundation of pulse diagnosis in TCM today.

How many pulse types does Mai Jing describe?

Mai Jing describes 24 distinct pulse types (二十四脉), each defined by specific characteristics of depth, speed, width, force, and shape. This was a major advancement from earlier texts. Later works expanded the number to 28 or 32, but Wang Shuhe's 24 remain the core pulses taught in TCM education.

Mai Jing (脉经): The Pulse Classic — Wang Shuhe's Masterpiece of Pulse Diagnosis

What Is Mai Jing?

Mai Jing (脉经), “The Pulse Classic,” is the earliest surviving systematic treatise on pulse diagnosis in Chinese medicine. Written by Wang Shuhe (王叔和) during the Western Jin Dynasty (circa 280 AD), this landmark text organized centuries of scattered pulse knowledge into a coherent clinical system that remains the foundation of TCM pulse diagnosis today.

Wang Shuhe was also the compiler and editor of the Shanghan Lun (Treatise on Cold Damage), making him one of the most influential figures in Chinese medical history. His dual contribution — organizing Zhang Zhongjing’s clinical work and creating the definitive pulse text — shaped TCM practice for nearly 2,000 years.

Historical Context

The Author: Wang Shuhe

Lived circa 210–285 AD during the Wei-Jin period
Served as a court physician (太医令) during the Western Jin Dynasty
Had access to numerous ancient medical texts now lost to history
Combined clinical experience with scholarly synthesis

Why Mai Jing Was Written

Before Mai Jing, pulse diagnosis knowledge was:

Scattered across the Huangdi Neijing, Nan Jing, and other early texts
Described inconsistently with overlapping terminology
Difficult for practitioners to apply systematically

Wang Shuhe recognized this problem and spent years collecting, comparing, and organizing pulse knowledge into a single, authoritative reference.

The 24 Pulse Types

Mai Jing’s most celebrated contribution is its codification of 24 distinct pulse types (二十四脉), each defined by precise characteristics:

Pulse Name	Chinese	Characteristics	Clinical Significance
Floating	浮脉 (Fu)	Felt with light pressure, at the surface	Exterior pattern
Deep	沉脉 (Chen)	Only felt with heavy pressure	Interior pattern
Slow	迟脉 (Chi)	Less than 4 beats per breath (under 60 bpm)	Cold pattern
Rapid	数脉 (Shu)	More than 5 beats per breath (over 90 bpm)	Heat pattern
Surging	洪脉 (Hong)	Large, forceful, like waves crashing	Excess heat
Fine	细脉 (Xi)	Thin, thread-like, barely perceptible	Qi/Blood deficiency, dampness
Empty	虚脉 (Xu)	Forceless, soft, lacking substance	Deficiency pattern
Excess	实脉 (Shi)	Forceful, full, strong at all levels	Excess pattern
Tight	紧脉 (Jin)	Tense, like a twisted rope	Cold, pain
Moderate	缓脉 (Huan)	Relaxed, slightly slow (but not disease-slow)	Dampness, or normal in relaxed individuals
Wiry	弦脉 (Xian)	Taut, like a guitar string	Liver pattern, pain, phlegm
Slippery	滑脉 (Hua)	Smooth, rolling, like pearls on a plate	Phlegm, dampness, pregnancy
Rough	涩脉 (Se)	Choppy, uneven, like a knife scraping bamboo	Blood stasis, Qi stagnation, Jing depletion
Weak	弱脉 (Ruo)	Soft, deep, forceless	Qi and Blood deficiency
Soft/Relaxed	软脉 (Ruan)	Soft, floating, thin	Dampness, deficiency
Firm	牢脉 (Lao)	Deep, firm, large, forceful	Deep internal accumulation
Scallion-stalk	芤脉 (Kou)	Hollow, like a scallion stalk — large but empty inside	Massive blood loss
Drumskin	革脉 (Ge)	Tight and hollow, like a drum surface	Blood loss, Jing depletion
Hidden	伏脉 (Fu)	Deeper than deep — very hard to find	Severe internal block, extreme cold
Stirred	动脉 (Dong)	Bouncing, shaking — rapid and short	Pain, fright, pregnancy
Prominent	促脉 (Cu)	Rapid with occasional pauses	Heat with Qi/blood stagnation
Scattered	散脉 (San)	Scattered, rootless, dissipating	Severe Qi depletion, critical condition
Short	短脉 (Duan)	Short, does not fill the pulse position	Qi deficiency, Qi stagnation
Long	长脉 (Chang)	Extends beyond the normal pulse position	Excess heat, strong Zheng Qi

The Three Positions System

Mai Jing also formalized the Cun-Guan-Chi (寸关尺) three-position system for feeling the pulse at the wrist:

Left wrist:
  Cun (寸) — Heart / Pericardium
  Guan (关) — Liver / Gallbladder
  Chi (尺) — Kidney (Yin) / Lower Burner

Right wrist:
  Cun (寸) — Lung / Chest
  Guan (关) — Spleen / Stomach
  Chi (尺) — Kidney (Yang) / Gate of Life (Mingmen)

By feeling the pulse at three positions, at three depths (superficial, middle, deep), practitioners get nine pulse readings — the “three positions and nine designations” (三部九候).

Structure of the Text

Mai Jing consists of 10 volumes (卷) covering:

Volumes 1-2: The 24 pulse types — definitions, characteristics, and significance
Volumes 3-4: Pulse diagnosis methods — positions, techniques, and seasonal variations
Volume 5: Pulse patterns associated with specific diseases
Volumes 6-7: Pulse in the context of the Shanghan Lun (cold damage) patterns
Volumes 8-9: Pulse in warm disease and miscellaneous conditions
Volume 10: Pediatric and gynecological pulse diagnosis

Legacy and Influence

On TCM Pulse Diagnosis

Established the standardized terminology still used in TCM education today
Created the framework for correlating pulse qualities with clinical patterns
Influenced every subsequent pulse text in Chinese medicine

On Global Medicine

Mai Jing was translated into Arabic, Japanese, Korean, Vietnamese, and later European languages
It influenced pulse diagnosis traditions across East Asia
Early European missionaries brought pulse knowledge from China based partly on this text

Later Expansions

While Mai Jing defined 24 pulses, later texts expanded the system:

Bin Hu Mai Xue (濒湖脉学, 1564) by Li Shizhen — added 4 more for 28 pulses
Some modern texts describe up to 32 pulse types
Wang Shuhe’s original 24 remain the clinical core

Why Mai Jing Still Matters

The language of pulse diagnosis in TCM today derives directly from Mai Jing
The 24 pulse types remain the foundation taught in every TCM university
The three-position system is unchanged after nearly 2,000 years
Modern research on pulse waveform analysis is validating traditional pulse categories

Key Takeaways

Mai Jing (The Pulse Classic) is the first systematic text on pulse diagnosis, written circa 280 AD
Author Wang Shuhe also compiled the Shanghan Lun — two of the most influential contributions to TCM
Defined 24 pulse types with precise characteristics that remain the clinical standard today
Formalized the Cun-Guan-Chi three-position system still used at every TCM consultation
Influenced pulse diagnosis across all of East Asia and remains relevant in modern TCM education

Disclaimer: This article is for educational purposes only. Pulse diagnosis requires extensive clinical training and should be performed by qualified practitioners.