Common gliomas mainly include astrocytoma, oligodendroglioma, mesenchymal astrocytoma, glioblastoma, etc. Different gliomas have different imaging manifestations. 1. Astrocytoma: CT scan shows a low-density intracerebral lesion with uniform density, no necrosis and hemorrhage foci around it, no obvious edema around the tumor, some of the tumors are isointense on CT, MRI scan shows low signal on T1, high signal on T2 and FLAIR images, and the tumor generally does not strengthen after MRI enhancement scan. 2. oligodendroglioma: the most obvious feature of oligodendroglioma is calcification, on CT scan, most of the tumors will have high-density calcified area, which often appears in the peripheral part of the tumor, and the non-calcified part of the tumor will be isodense or low-density shadow, and the tumor may be strengthened in enhanced CT, and the tumor area can be seen to have low signal at T1 and high signal at T2, with the signal of the calcified area missing, and the peri-tumor edema is not obvious on MRI. 3.Mesenchymal astrocytoma: CT shows mixed foci with low density or uneven density, most of the tumors have obvious displacement effect, accompanied by peritumoral edema, which may be accompanied by cystic changes and calcification, MRI shows tumor with low signal in T1, high signal in T2, no necrosis and hemorrhage, after enhancement, most of the tumors have enhancement. 4. Glioblastoma: CT shows low or isodense shadow, visible high-density hemorrhage area, peritumoral edema, uneven enhancement of the tumor after enhancement; MRI shows T1 low signal and T2 high signal in the tumor area. For patients diagnosed with glioma, they should immediately go to the relevant departments of regular hospitals for consultation and treatment under the guidance of professional physicians, so as to avoid delaying the condition.