Hemangioma and cyst differentiation method is mainly judged from the etiology, symptoms and signs. Hemangioma is a vascular neoplastic lesion, characterized by abnormal proliferation of vascular endothelial cells, benign, junctional and malignant; cyst is a common cystic benign mass lesion in human body, which is usually filled with liquid of different nature, and it can be found in various parts of the body, such as brain, liver, kidney, ovary, prostate and other parts of the cyst. 1. Etiology and pathogenesis: hemangioma is still unclear, and is mainly thought to be closely related to abnormal proliferation of blood vessels and neovascularization. There are congenital, hereditary, disease and other factors for different parts of cysts, and they are related to environment, diet, infection and hormone, etc. They can be caused by a single factor or a combination of factors. 2. Symptoms and signs: hemangioma mostly occurs in skin and subcutaneous tissues, mainly manifested as skin color, morphology change and skin elevation of tumor; the more superficial parts are mostly manifested as congestive patches of the skin, and the deeper parts of the skin can be light blue or only manifested as elevation of the skin. Smaller cysts are asymptomatic, and ultrasound can usually detect cystic structures. Hemangiomas and cysts need to go to the hospital for detailed examination to clarify the cause of the disease, and then deal with them according to the physician’s recommendations.