Multiple hypodense shadows in the liver refers to the abdominal scanning CT in which multiple areas of the liver are found to be of lower density than the normal liver, which may be caused by multiple cysts, hepatic hemangiomas, and malignant tumors of the liver. 1. Multiple cysts: low-density shadow in the liver can be caused by multiple cysts, which are benign lesions. If the tumor is very small, does not affect the liver function, and has no symptoms, it usually does not cause great harm to the body. At present, it does not need special treatment, regular review of liver ultrasound and CT, and dynamic observation. 2. Hepatic hemangioma: Hepatic hemangioma also shows low density in plain CT, which should be combined with ultrasound and enhanced CT. 3. Malignant tumor of liver: primary tumor and metastatic tumor of liver may show slightly low density, in this case, it should be combined with enhanced CT of liver. When abnormal symptoms appear, patients should go to the hospital for CT examination in time, so as to carry out targeted treatment in time, so as not to delay the best time for treatment.