The treating methods for infectious waste were studied in the viewpoint of health?sanitation and environment within the range of waste stream of waste management act to obtain the effective treating method by comparing and analyzing the methods used in Korea and developed countries. Incineration and steam sterilization were used as treating methods for infectious waste. However, incineration method is superior to stram sterilization in developed countries, especially, in European countries and Japan. Also, the same is in Korea. In the case of incineration, the generation and removal of hazardous discharging gas such as dioxin were difficult problem to treat properly infectious waste. In steam sterilization, uncertainty of sterilization, double treatment and generation of an offensive ordor were difficult. In order to solve these problems, the selection of incineration as teating method is better and medium and large size incinerator is essential in stead of small size incinerator, from which the specialization of treatment and improvement of technological development can be obta