张元素曰:“凡药根之在土中者,中半以上,气脉之上行也,以生苗者为根,中半以下,气脉之下行也,以入土者为梢.病在中焦与上焦者用根,在下焦者用梢,根升梢降,人之身半以上,天之阳也,用头,中焦用身,身半以下,地之阴也,用梢,乃述类象形者也。”而古代《本草》对此用取类比象方法以阐明中草药生长部位与药性相关联的尚有花叶轻浮升散;子实质重降下;枝能横行四 Zhang Zhang said: “Where the roots of medicine are in the soil, more than half of them, the upper part of the air veins are also the roots of the seedlings, the middle half and the lower ones, and the air veins are also under the line. The coke is rooted, and in the lower coke, the shooter rises, the root rises and descends. The person’s body is more than half, and the day’s yang is also used with the head. The middle coke has the body, and the body is half or less. The earth’s yin is also used. In the ancient ”Ben Cao" method, the use of an analogy method was used to clarify that the growth position and medicinal properties of Chinese herbal medicine are related to the frivolous rise of scattered flowers; sub-substantial weight reduction; branches can run horizontally four.