Objective To investigate the application value of MRI in the diagnosis of cerebral falx meningioma. Methods Retrospective analysis of the clinical data and MRI data of 81 cases of cerebral falx meningioma patients in our hospital received during the diagnosis and treatment during December 2013 to December 2015. Comprehensive analysis of MRI features of cerebral falx meningioma and pathological features. Results A total of 81 patients developed 92 tumors, including single patients in 74 cases, 7 cases of patients with multiple. Before, during and after 1/3 of cerebral falx meningioma were 23 cases, 28 cases, 30 cases. The tumor diameter between 1-8cm morphology was hemispherical 86 (about 93.5%), nodular 6 (about 6.5%). MRI of cerebral falx meningioma tumor qualitative diagnosis coincidence rate was 91.3% (84/92), localization diagnosis with rate was 86.42%, and with pathological diagnosis results compared, the difference was not statistically significant(P>0.05). This group of 81 patients with tumors of 56 patients in the T1WI signal, 19 cases of T1WI slightly low signal, 45 cases in the T2WI signal, 30 in T2WI is slightly high signal in 6 cases, T1WI and T2WI are not uniform signal. Conclusion MRI of cerebral falx meningioma patients with clinical diagnosis of, can clearly display the development of cancer in the site, number, size, shape and its relationship with the surrounding brain tissue, and the tumor signal and tumor blood supply variation and showed obvious enhancement of the role, the falx of meningeal tumor diagnosis and qualitative diagnosis has high diagnostic coincidence rate and in clinical practice can be as a first inspection method. It is worthy of further promotion and Application.