Qiqihar No.7 Hospital was formed by the merger and reorganization of the original infectious disease hospital and the first neuropsychiatric hospital in the tide of institutional reform. Among them, the original infectious disease hospital was founded in September of 1950, after more than half a century; The former First Neuropsychiatric Hospital was established in July 1968 with a history of 37 years. Infectious diseases and neuropsychiatry are extremely important disciplines in the medical field, which cannot be replaced by any other discipline. Over the years, infectious disease hospitals have made important achievements in the treatment and research of acute and chronic liver diseases, liver cirrhosis, severe hepatitis and nephrotic syndrome fever. The research on the treatment of chronic hepatitis with integrated traditional Chinese and western medicine won the Qiqihar Science and Technology Progress Award 1998. The research on oliguria stage of epidemic hemorrhagic fever won the fourth prize of Qiqihar Science and Technology Progress Award 65438-0999. The research topic of blocking mother-to-child transmission to prevent hepatitis B, the clinical research topic of alcoholic liver disease, the epidemic trend of sexually transmitted diseases and AIDS and the treatment research topic have been approved by the Municipal Science and Technology Commission. Since 2002, the treatment of severe hepatitis based on artificial liver support system has filled the gap in the western part of Heilongjiang Province, and a new project of ultrafiltration and reinfusion of ascites to treat intractable ascites has been carried out, which has achieved good clinical results.