Objective:To investigate the diagnostic value of MRI and CT for the liver space-occupying lesions.Methods:The clinical data of 70 cases of patients with liver space-occupying lesions in our hospital from June 2012 to May 2016 were divided into two groups and retrospectively analyzed.35 cases underwent contrast enhanced ct scans (CT group),and others underwent dynamic contrast-enhanced MR imaging(MRI group).The pathological diagnosis,number of lesions and lesions diameter were ompared between two groups.Results:No significant difference was found in the pathological diagnosis,number of lesions(71 vs 70) and lesions diameter(2.25 ± 2.01 cm vs 2.19± 1.98 cm) between two groups(P＞0.05).As the gold standard by pathological diagnosis results,correct diagnostic rate of MRIgroup were 85.71％,which was 77.14％ CT group and lower than that of the MRI group,but no significant difference was found between two groups (P＞0.05).The incidence of adverse reactions in CT group was significantly higher than that of the MRI group (P＞0.05).Conelusion:Both CT and MRI enhancement scanning have higher diagnostic value for the liver space-occupying lesions,but MRI enhancement scanning has higher safety and tolerability.