Objective To explore the result of diagnosis for the patients with communication of the skull base meningioma by CT and MRI. Methods 70 cases of patients with communication of the skull base meningioma were researched. They were tested by CT and MRI. The clinical presentation, tumor location, tumor CT, MRI imaging characteristics, CT and MRI diagnosis, CT and MRI diagnostic accuracy of the communication of the skull base meningioma invade surrounding bone, soft tissue diagnosis accord with conditions were observed. Results There had no significant difference on the diagnostic accuracy rate(P＞0.05). The diagnostic accuracy rate for the patients with base of communication meningiomas invading surrounding bone by MRI were higher than CT(P＜0.05). The diagnostic accuracy rate for the patients with communication of the skull base sex meningioma infringement of the surrounding soft tissue by MRI were higher than CT(P＜0.05). Conclusion It has the same diagnostic accuracy rate for the patients with communication of the skull base meningioma by CT and MRI, the MRI has high rate on communication of the skull base meningioma infringement of surrounding bone and soft tissue.