Huzhu Tu Autonomous County, or in short Huzhu County (互助县), is an autonomous county under the jurisdiction of the prefecture-level city of Haidong, in the east of Qinghai province, China, bordering Gansu province to the northeast. It has an area of 3,321 km2 (1,282 sq mi) and approximately 370,000 inhabitants (2004). Its seat is the town of Weiyuan.