Cysts on the foot are most often seen as tendon sheath cysts formed by tendons and subchondral cysts in the joint, and there are differences in the treatment of the two. Tendon sheath cysts are reversible cysts that disappear with local pressure and are usually associated with overexertion and are not usually malignant. If the cyst is painful, it can be relieved by applying topical fotarine ointment. If the cyst is large in size and affects the local activity, it can be reduced in size and local restriction by puncture and aspiration under the guidance of a doctor. If the cyst is secondary to infection, it also needs to be treated with anti-infection therapy, and if necessary, removal of the cyst under local anesthesia is also an option. In addition, the elimination of the cyst can also be promoted by Chinese medicine treatment and physical therapy, such as acupuncture of the skin around the mass to promote the drainage of fluid and red light irradiation of the mass area to accelerate the self-absorption of the skin. In other patients, subchondral cysts are formed due to degeneration of articular cartilage and contusion of subchondral bone as well as infiltration of synovial fluid into the bone, and the cyst itself has no obvious symptoms. Since this is a secondary lesion, it usually requires appropriate treatment for the primary disease, or the cyst may be cut arthroscopically. Regardless of the treatment method, a certain amount of daily management, no weight bearing or strain, and local bathing may be appropriate.