He was a son of Yangshe Zhi 羊舌職 and served as a military commander of the town of Zhunan 邾南. He adopted the title of minister of war (sima 司馬), penetrated into the territory of Wei 衛 and claimed a ransom from this small state.
There was a territorial conflict between the Marquis of Xing 邢 who was a grand master (dafu 大夫) under the Duke of Jin, and the nobleman Yongzi 雍子. Yangshe Fu, ordered to mediate and to settle the dispute, kidnapped a daughter of Yongzi and charged the Marquis of Xing with the abduction. The Marquis thereupon killed Yangshe Fu and Yongzi during a court audience.