Abstract: In order to reduce debugging complexity between the master station and the terminal in the distribution automation project, the automatic configuration of SCADA based on 104 protocol is deeply researched on in the paper. The 104 protocol is briefly introduced and the characteristics of the 104 protocol are analyzed; the process of point configuration, debugging and data acquisition between the master station and the terminal of distribution automation are deeply analyzed. Based on the object-oriented method, a SCADA automatic configuration solution based on 104 protocol is put forward, and the realization of the key technologies is described in the paper.