Abstract: The problems discussed in this study are how a given form of social protection to street vendors in Semarang is organized, how unauthorized street vendors respond to the treatment given by the government and how the welfare of unauthorized street vendors are. This study employed a qualitative approach and case study. The study took place in Semarang, Indonesia which focused on some streets placed by street vendors, especially in Kokrosono street. The unit of analysis is the study of street vendors and the market office. Samples were taken purposively. The data was taken with the observation and interviews. The things that cannot be taken with these two techniques were conducted with literature. To measure the validity of the data, this study used triangulation technique. The results were analyzed with an interactive qualitative analysis techniques. From the research and findings of the field, it can be summarized that the form of social protection in the form of social assistance, social welfare and social insurance are not provided to the unauthorized street vendors in Kokrosono. Their responses to the treatment given by local government are receptive and adaptive, including when they are issued by the municipal police officers. In general, prosperous street vendors, especially could afford meeting their daily needs. Based on the results of the study, it is suggested that the government empowers the unauthorized street vendors and do not discriminate them so that they can maintain their survival.