Objective To analyze the imagine manifestation of muscular soft tissue lymphoma and explore CT and MRI features. Methods This was a retrospective review of CT or MRI studies of 7 patients with histologically confirmed diagnosis of muscular soft tissue lymphoma, including MRI in 4 cases, CT in 3 case. Results Imaging Diagnosis was compared with pathological results, diagnosis before the operation were muscle lymphoma(2 cases),sarcoma(2 cases), metastatic tumor(2 cases) and fibroid tumor(1 case). On MR T1WI,2 were intermediate signal intensity and 2 were slightly low signal intensity. On MR T2WI, all were slightly high signal intensity. On FLAIR, all were slightly high signal intensity. The lesions were homogeneous,and systis and necrosis in lesions were rare. In the 3 conrtast-enhanced cases,2 were homogeneous and 1 was inhomogeneous. The les-ions were homogeneous, which were isoettenating to normal muscle on unenhanced CT images, after intravenous injection of contrast media, the lesions enhanced homogeneously. Conclusion There are several characteristics on the imaging of CT and MR of muscular soft tissue lymphoma, and image examination are helpful for the diagnosis of muscular soft tissue lymphoma.