草书有章草、今草之分,从源流的角度看,两者共同源于西汉早期草书——篆草、草隶(古隶);章草在与隶书互为影响中率先成熟,并在东汉、魏晋最为兴盛;今草则成熟较晚,今草在形成过程中注加了真书(楷书)、章草、行书的因子,在张芝、王氏父子后蔚为洪流。今草在流变过程中,根据风格、激情的强烈程度,又细化为小草与狂草(也称大草,因其特殊性,以下细分论述时予以单列),今草与行书结合称之为行草,今草与章草结合则形成混合体草书等。历代书论中论及章草或今草的比较多,涉及章草 From the perspective of origin, the two originated from the early cursive script of the Western Han Dynasty-Zhuan Cao and Cao Li (ancient masters); the chapter Zhang took the lead to mature in the interaction with the official script, and in the Eastern Han Dynasty, Wei Jin is the most prosperous; this grass is mature later, this grass added in the formation of real books (regular script), Zhangcao, Xingshu factor in Zhang Zhi, Wang father and son after the flood. This grass in the rheological process, according to the style, the intensity of passion, but also refined into grass and mad grass (also known as the big grass, because of their particularities, the following subdivisions to be discussed separately), today’s grass and Xingshu combined called For the line of grass, grass and the combination of today’s grass is a mixture of cursive and so on. Ancient sutra or modern history of the book about grass, involving Zhangcao