Wen County or Wenxian (Chinese: 文县; pinyin: Wén Xiàn) is a county under the administration of the prefecture-level city of Longnan, in the southeast of Gansu province, China, bordering Sichuan province to the south and west.

[4] Former Townships that were merged into others in 2004:[6] Wen County has been inhabited since the neolithic era, as evidenced by Majiayao culture sites.

The main road to access the county, China National Highway 212, was also blocked in both directions.

[7] Tea, Codonopsis pilosula, Sichuan pepper, walnuts and olive oil are the main agricultural produce of the region.

The reservoirs serve to provide hydroelectricity, aquaculture, flood control, irrigation and for tourism development.