Yin Jun, male, Bai nationality, is a native of Eryuan, Yunnan Province. He was born in 1932 and joined the CPC in 1949.
Yin spent his early career as a Party leader and mayor of Xiaguan City. He also served as secretary of various county and prefectural committees. In 1983, he became a member of the Yunnan Provincial Committee.
Yin was an alternate member of the 12th and 13th CPC Central Committees, a delegate to the 15th CPC National Congress and a deputy to the 8th and 9th NPC.