According to the information of the people's government of Sanjia Town, Sanjia Jizhen is located in the eastern part of Guanghe County, east of Lintao County, Dingxi City, Xindian Town, across the river, south of Shuiquan Township, west of Qijiajie Township, north of Dongxiang Autonomous County, Orchard Township, and Chejiawan Township, with the jurisdiction of 15 administrative villages, of which there are 3 impoverished villages, and 12 non-impoverished villages. So this place is very poor.
The terrain of Sanjiaji Town is mountainous and hilly, with the terrain high in the west and low in the east. The highest point is located in the upper set of village Zhongyingtai Gao Tsui, 2380 meters above sea level; the lowest point is located in the village of five households Wuto Wuto, the transportation is not convenient, the people live in scattered, obsolete housing, poverty alleviation is very difficult.