Abstract：In this paper, we analyze the characteristics of segmental activity on the Jinshajiang fault zone using GPS horizontal velocity field and current small earthquake activity distribution data, and discuss the seismic risk. The results show that: 1) The activity of the Jinshajiang fault shows segmentation characteristics. The activity in the northern section is not obvious, but the middle and southern sections show obvious right-lateral strike-slip movement. The sliding rates are 4.9 mm/a and 5.5 mm/a respectively, and the blocking depth is about 20 km. 2) There are strain accumulations in the middle and south sections of the Jinshajiang fault, and the seismic risk cannot be ignored. 3) According to current crustal deformation data, the Jinshajiang fault is the northwestern boundary that controls the movement of the Sichuan-Yunnan rhombus block.