"Seven" is the mysterious number all over the world. Although there are regional differences in its origin of formation

it is mainly related to human understanding of astrospace

celestial body motion law and life rhythm of human body that reflects wholeness mode of thinking about time

space and number in the primitive times.The relationship between number "seven"and Chinese medicine mainly reflects classification pattern of seven classification and circadian rhythms based on "seven " as cardinal number. When researchers understand the relation between the mysterious number"seven"and Chinese medicine

they must have very prudent attitude to clarify primarysecondary and causal relationships between modal deduction and practical experience.