Objective To investigate the MRI features of idiopathic granulomatous mastitis(GM) and its value in the diagnosis and treatment of integrated traditional Chinese and Western medicine. Methods The clinical data of 32 patients with GM from January 2016 to June 2017, which were confirmed by our hospital and received MRI examination of the breast and the combination of traditional Chinese and Western medicine were analyzed retrospectively, the features of GM's MRI image were summed, and the value of MRI for the observation of quality effect was evaluated. Results 32 cases of T1WI showed equal and low signal, there were 30 cases of high and low mixed signals of T2WI, 2 cases of equal signal. There were 11 cases of irregular lump like lesions, 21 cases of non - lump like distribution. Enhanced scan of 3 cases uniform strengthened, 29 cases of in homogeneous strengthened, 15 cases of ring-shaped strengthened with different size of the lesion, 14 cases of nodular, trellis strengthened. Amalgamative axillary lymph nodes were enlarged in 18 cases. 32 cases were treated by combination of traditional Chinese and Western medicine, 16 cases were cured by clinical and MRI evaluation, 14 cases were improved, 2 cases were progresses, the effective rate was 93.75%. Conclusion GM has its characteristic features on MRI, so MRI is an important means to diagnose GM and evaluate the clinical efficacy.