Swollen calves with hard lumps inside may be localized bruises, scar hyperplasia, vascular lesions, etc., which can be treated by physical therapy, traditional Chinese medicine and surgery. 1. Localized bruising: After the calf is hit, the capillaries rupture and cause a small amount of bleeding, and the blood accumulates under the skin to form lumps. Within 72 hours, ice packs can be used to reduce bleeding, and after 72 hours, hot packs can be used to promote blood circulation and accelerate swelling. 2. Keloid hyperplasia: common in the leg muscle fiber damage after impact, after repair due to scar fibrous tissue hyperplasia to form a hard lump, can be massaged, fumigation and other traditional Chinese medicine, and heat therapy, ultrasound and other physical therapy, soften the local scar tissue. 3. Vascular lesions: including phlebitis, venous thrombosis, etc. Blood circulation is blocked due to the inconvenience of walking after the impact or the impact is too heavy, resulting in leg lumps, pain, limited walking, etc. The treatment includes medication and surgery. Treatment includes medication and surgery, with low molecular heparin, rivaroxaban and other anticoagulant drugs as the main medication. If the lumps do not get better with obvious pain, surgical treatments such as vein stripping and deep vein catheter thrombolysis are feasible. If the hard lump in the leg continues to increase or accompanied by obvious pain, you should consult a doctor as soon as possible, after clarifying the cause of the disease, under the guidance of the doctor, so as not to delay the condition. Drugs should be used according to the doctor’s instructions.