The swelling of the inner thigh, generally speaking, the common clinical causes are mainly the following: a. After the thigh is hit by external forces, local muscle lacerations can be accompanied by the formation of local hematoma, which causes swelling, and the local skin temperature of the patient can be accompanied by a significant increase as well as pressure pain symptoms. It is suggested that the patient should apply local ice for 24 hours to promote capillary constriction and reduce tissue exudation, and after 24 hours, hot salt pack can be applied externally, moxibustion stick can be fumigated, and oral medications such as swelling and pain can be taken to promote the self-absorption of local hematoma. Second, the formation of medial thigh lipoma, which is a mass formed by excessive accumulation of local adipose tissue, can be clarified by ultrasound examination of the nature of the lesion. If the local mass is accompanied by obvious pain, it is recommended to perform surgery to remove the mass as soon as possible, which can improve the symptoms of pain and swelling.