Hard lumps on the legs that don’t go away from a bump are usually formed by blood and tissue fluids after trauma, but they can also be caused by the formation of scars in the body. Hot compresses and physical therapy can be applied to the affected area to relieve the symptoms. Hard lumps on the legs are usually due to local soft tissue damage and capillary rupture, resulting in the formation of hard lumps of blood and tissue fluid, which usually takes some time to be slowly absorbed. Absorption can also be promoted by applying hot compresses 2~3 times a day. It is also possible that the muscle damage is severe, resulting in localized proliferation of fibers and scar formation within the body. If the scar is formed in the body, which leads to hard lumps on the legs, patients can be treated by physical therapy, such as elastic compression, freezing, laser and other treatments. If necessary, surgical incision can be used. It is recommended to consult a doctor for timely treatment of hard lumps on the legs under the guidance of a doctor.