Smooth muscle tumors are generally benign tumors, but may be malignant in rare cases. Smooth muscle tumors are tumors originated from smooth muscle tissues, mostly found in internal organs such as uterus, digestive tract and bladder, or in subcutaneous erector spinae muscles, smooth muscles around sweat glands, breasts, clitoris and labia in women, scrotum and penis in men, etc. In short, wherever there are smooth muscle tissues, smooth muscle tumors are likely to appear, but they are generally benign tumors. The cause of smooth muscle tumor is not clear, may be related to heredity, in endocrine disorders, cold stimulation and long-term pressure is easy to trigger. In the early stage of smooth muscle tumor, there are paroxysmal pain or pressure pain, and the pain phenomenon is aggravated by cold and pressure stimulation, and the pain symptom is aggravated with the prolongation of the course of the disease. Surgery is the main treatment for smooth muscle tumor, but for patients with obvious pain, frequent attacks and inconvenient for surgery, oral nifedipine can be taken for treatment. Smooth muscle tumor patients should pay attention to keep warm, the diseased area can not be stressed, have sufficient nutrition, appropriate physical exercise.