Chongxin (simplified Chinese: 崇信县; traditional Chinese: 崇信縣; pinyin: Chóngxìn Xiàn) is a county in the southeast of Gansu province, China, located 70 km (43 mi) northeast of Pingliang, which administers it.

Chongxin was established in 963 AD, its name being derived from 尊崇信任 (Zūnchóng xìnrèn), meaning 'respect and trust'.

The government or municipality offices are mainly located in Jinping Town.

Chongxin County is divided to 1 Subdistrict, 4 towns and 2 townships.

Daxing Primary School, as of 2016, has 40 students in multi-grade classrooms and five teachers, none of whom have university degrees.