The actual circumstance of studies on the legislation system of social welfare in Korea is insufficient, so the more research efforts are required for systematization of social welfare laws. The social welfare law is defined in this study as every laws that insure the human life within social relations and rule the public, and private systems & politics etc. for realizing social justice. And this study suggested the legislation system of social welfare in Korea devided into the social security act and the laws in connection with social welfare appling the concept in broad sense. It included in the social security act, general social security(2), social insurance(10), public assistance(6), social welfare service(21) laws and included in other laws in connection with social welfare, the laws(151) that legislated for insuring the human life of constitutional law trying to categorize by classifying into public health · hygiene, residing · environment, education, employment · labor, traffic, feminine · family, children · adolescent, veteran · compensation, human rights · protection and other general social welfare area.