A thumping sound in the calf stomach may be caused by ligament tear, bone and flesh damage and other factors, which generally cannot be self-healing. 1. Ligament tear: Strenuous exercise in daily life may lead to ligament tear and thumping. You should go to the hospital for examination in time and take methods such as plaster immobilization or surgery for treatment according to the actual condition. 2. Bone damage: when the leg is hit violently, it may lead to fracture or muscle damage, and there will be a bang. It can be treated by using anti-inflammatory drugs or taking surgical methods under doctor’s guidance. It is suggested that patients should eat more food containing more vitamins as well as proteins in their daily life, which can replenish the nutrients needed by the organism, improve the resistance of the organism and promote the recovery of the condition.