50-year-old people stand for a long time calf swelling and pain, may be muscle strain, lumbar disc herniation, varicose veins of the lower extremities and other factors. 1. Muscle strain: If a 50-year-old person stands for a long time, resulting in muscle strain in the calf area, there may be swelling and soreness of the calf, usually after rest, massage can be relieved. 2. Lumbar disc herniation: If a 50-year-old person has a lumbar disc herniation, the protruding nucleus pulposus or intervertebral disc compresses the local nerves, which may also cause swelling and pain in the calf after standing for a long time. 3. varicose veins of the lower extremities: if the 50-year-old varicose veins of the lower extremities, the lower extremity venous blood circulation is not good, there may be standing for a long time in the calf swelling and pain, and in severe cases, there will be a venous ulcer of the lower extremities. If 50-year-old people stand for a long time calf swelling and pain, it is recommended to go to the regular hospital as soon as possible to consult and examination, after a clear diagnosis, timely cooperation with professional doctors for targeted treatment.