] Objective The research aims at deepening comprehension of supratentorial intraparenchymal ependymoma(SIE) by analyzing its imaging features and pathological basis. Methods CT & MRI and pathological data of 5 cases surgically and pathologically verified SIE are retrospectively analyzed. 5 cases undergo conventional and enhanced MRI scan and 3 cases receive CT scan. Observations are made mainly of the location, size, form, density/signals, enhanced features of, and edema around the tumor. Results We find 1 case of left parietal lobe, 2 cases of left frontal lobe, 1 case of right temporoparietal occipital lobe, 1 case of right frontotemporal parietal lobe. The average diameter of the tumors of the 5 cases is more than 4cm. Among the cases, 1 case is complete cystic mass, 2 cases solid cystic mass, 1 case complete solid-appearing mass and 1 cases solid-appearing mass with adjacent brain parenchyma atrophy. The parenchyma and capsule wall of the tumor present a slightly high density on CT, equally/slightly long signals on MRI. The cystic mass presents long T1 and T2 signals. 4 cases are associated with moderate peritumoral edema; enhancement scanning of the solid mass and capsule wall shows a distinct asymmetry. Conclusion Misdiagnosis rate of SIE is high, but its imaging performances are characteristic, the irregular solid cystic mass has a clear boundary in the brain parenchyma beside the supratentorial ventricle. SIE should be taken into account for the patient whose brain parenchyma presents a slightly high density on CT, equally/slightly long T1 and T2 signals on MRI, and obvious enhancement through enhancement scanning．