Renal malformation tumor is a kind of common benign tumor of kidney, also called renal smooth muscle hemangioma, which usually does not need treatment if it is small, for example, the diameter is below 5cm, and there is no obvious symptom, many of them are found unintentionally during physical examination, and regular review can be done. If, in the course of regular checkups in three to six months, a renal malformation tumor is found to be growing faster or accompanied by pain and discomfort, mainly in the kidney area, surgical excision can be considered, which can generally achieve a curative effect. The nature of the disease can be confirmed by pathology after surgery, and malignant changes rarely occur. The possible hazards of renal malignant tumor include large growth, compression symptoms, and impact on kidney function, but nothing else is special.