Abstract: The key of exploration of a volcanic reservoir is to make clear the development and distribution of fractures in it. This paper presents the statistical analysis of the basic feature, the mechanical property and the effectiveness of the tectonic fractures in the volcanic reservoir of the Yingcheng formation in Anda area in Songliao basin, based on the outcrop, core and thin?section data of the volcanic rocks in this area. The results show that the Yingcheng reservoir mainly develops in regional conjugate tectonic fracture system to near?SN,NNW-SSE, NW-SE and near?EW directions, with core fracture linear density of 0.20~1.00 ribbons per ceti meter. The most tectonic fractures are tensional and half?filled. By 3D tectonic stress field simulation, combined with rock burst method and energy method, a quantitative prediction model for tectonic fracture distribution of Yingcheng formation in Anda area is developed, by which the favorable areas with developed tectonic fractures are predicted, providing important reference for further exploration and development of the volcanic rock reservoirs in this area