ZHANG Dechao, an old doctor of traditional Chinese medicine, put forward the pathogenesis view of "dampness, heat, toxin and stasis in blood and injury of liver and kidney by spleen", the treatment concept of "qi and blood, zang and fu organs being regulated together, pathogenic and pos. factors being treated simultaneously", the prescription concept of combining main prescription with auxiliary prescription in the diagnosis and treatment of chronic viral hepatitis;for posthepatitic cirrhosis, the treatment strategy of "qi, blood, phlegm and deficiency" "qi, blood, water and deficiency" and the treatment principle of "four suitable and four unsuitable" were put forward resp. in the compensatory and decompensated stages;self made "Chuihuang Jiangmei Decoction" "Yanggan Jiedu pill" "Fugan Powder" and other empirical prescriptions. All of them have high theor. level and clin. value.