Located in the northeast of Sichuan Province and the core area of the contiguous poverty-stricken areas of Qinling-Dabashan region, Tongjiang County is a key county included in the national plan for poverty alleviation through development and an old revolutionary base area. It's the land of Tremella, and of caves.

Covering an area of 4,116 square kilometers, it has jurisdiction over one subdistrict office, 30 towns, and two townships, as well as a population of 802,000.