Abstract: In order to accurately predict structural fracture development in carbonate reservoirs, taking the second member of Jialingjiang formation in Puguang area for example, the paper studies the characteristics of fracture development by using field outcrop, core and thin section data; analyzes the forming mechanism of the fractures in the study area by combining with the test results of acoustic emission and inclusion homogenization temperature in the fractures. Based on which, fractures of different periods are predicted through stress field numerical simulation. It is concluded that the structural fractures were mostly formed under the NW-SE trending compression during the late Yanshan movement and the early Himalaya movement, and under the NE-SW trending compression during the late Himalaya movement. The development degree of shear fracture is higher than that of tension fracture in the second member of Jialingjiang formation in Puguang area. The structural fractures are mainly developed in the areas near fault zones, in the middle-western areas of Qingyangxi structure, in the main body of Puguang structure, in the northern parts of Dawan-Maoba and Fenshuiling structures and in the Tieshan structural belt. The rupture rate obtained from numerical simulation and the fracture development intensity have a good correlation with a relatively high correlation coefficient.