A leg cyst is a benign lesion that commonly occurs in the subcutaneous soft tissue. The main symptom is a local bulging mass or lump, which can also be painful, and the most effective way to eliminate it is to opt for surgery, which can be performed under local anesthesia to remove it. However, any kind of tumor, including cysts, has the possibility of recurrence after surgery, so it should be reviewed regularly. For single cysts, local aspiration and injection of sclerosing agent into the cyst can also be chosen for treatment to promote adhesion of the cyst wall to achieve the purpose of eliminating the cyst. In addition, attention should be paid to avoid strain or weight bearing, some patients are also prone to secondary varicose veins, which can also lead to local cystic dilatation and the formation of thrombophlebitis, and patients can also experience pain.