MRI is an important ancillary test for the diagnosis of cavernous hemangioma. MRI examination can clarify the location and size of the tumor and its relationship with the surrounding structures. Spongiotic hemangioma may show low signal in T1-weighted phase and high signal in T2-weighted phase under MRI. T1 value and T2 value are both basic factors of MRI, and low signal in T1-weighted phase and high signal in T2-weighted phase indicate that the lesion is a cyst-like or liquefied structure, which helps in diagnosis. After hemorrhage in spongiform hemangioma, it may show iron-containing heme deposition around its tumor, which shows as a black circle-like sign, i.e., the more specific sequence for examining hemangioma may appear black. The blood flow of cavernous hemangioma is significantly accelerated with MRI enhancement in MRI examination. In addition to the diagnosis of cavernous hemangioma by MRI, the diagnosis can also be confirmed by CT, which can accurately localize the cavernous hemangioma and determine the number of tumors. On CT, cavernous hemangiomas are usually round, oval, or pear-shaped with well-defined, rounded borders and mildly higher density than adjacent soft tissues, and may be identified by the presence of calcium deposits within the mass. In addition, the diagnosis of cavernous hemangioma can also be made by Doppler ultrasonography, pathology, electroencephalography, and PET-CT, which can be selected on a case-by-case basis.