After doing squatting, the cause of leg weakness may be caused by excessive muscle tissue movement, soft tissue injury, calcium deficiency, etc. The methods of treatment include general treatment, physical therapy, medication and so on. 1. Excessive muscle tissue movement: deep squatting is easy to cause muscle tissue fatigue, resulting in the accumulation of local lactic acid, resulting in leg soreness, weakness and so on. Generally, it can be gradually relieved through rest, local massage and other methods. 2. Soft tissue injury: muscle tissue strains, ligament strains, etc. can easily cause muscle tension to drop, resulting in leg weakness. Acute muscle injuries should be immediately rest, cold compresses, pressure bandages, elevation of the affected limb; also feasible pulse ultrasound therapy and acupuncture, massage and other symptoms. 3. Calcium deficiency: If the body is deficient in calcium, squatting can also cause lower limb weakness. Calcium can be supplemented by vitamin D, calcium carbonate and other calcium supplements to improve symptoms. In addition to the above reasons, squatting may cause hypokalemia and recurrence of lumbar spine disease after sweating a lot, which may also cause the above symptoms. If the above symptoms do not improve, it is recommended to go to the hospital to find out the cause of the disease and under the guidance of the doctor for regular treatment. The above drugs need to be used in accordance with medical advice.