Objective:To investigate the diagnostic value of magnetization transfer contrast gradient echo T2WI sequence in injury of knee joint. Methods:The MRI data of 56 cases with knee injury were analyzed retrospectively. All cases were performed with FSE sequence(Sagittal T1WI,T2WI)and Sagittal magnetization transfer contrast gradient echo T2WI sequence. The size,signal intensity,margin of bone contusion were analyzed,and the difference of sequence was compaired. Results:Among 56 cases,43 cases and 45 cases fuci were demonstrated on FSE T1W,T2W respectively. 50 cases fuci were depicted on magnetization transfer contrast gradient echo T2WI Sequence. The differences of the size,signal intensity homogeneity,border of bone contusions were statistically higher on MTC-GRE T2WI than that on FSE(P < 0. 05). Conclusion:MTC-GRE T2WI Sequence has great diagnostic value in contusion of knee joint,and it is superior to FSE sequence.