OBJECTIVE： To discuss the severe liver function damage induced by antituberculostics.METHODS： The severe liver function damage induced by antituberculotis was analyzed in 50 patients admitted into this hospital from January 1995 to January 2000.RESULTS： Sever liver function damage was related to the following factors:(1)history of liver diseases;(2)aged patient and malnutritional patient;(3)chronic alcoholism;(4)combined use of isoniazid,rifampin with other drugs;(5)hepatic dysfunction before treatment.CONCLUSION： The abovementioned factors should be under consideration in choice of antituberculotics.