The Improving of BP Algorithm for Fault Diagnosis of Horomill Xu Chao Wang Jianzhong Assoc.Prof.,Huangshi Polytechnic College,Huangshi 435003,China.This paper improves the BP algorithm for the faults diagnosis of horomill. The application proves that it is feasible to apply this improved BP algorithm in fault diagnosis and it can solve the local minimum problems in BP algorithm.BP algorithm; improving; fault diagnosis