There are many causes of muscle pain in the lower limbs: firstly, overexertion can cause muscle pain in the lower limbs, such as prolonged heavy exertion or strenuous sports, which can cause lactic acid to accumulate in the muscle soft tissues, thus causing muscle pain in the lower limbs; secondly, patients suffering from lumbar disc herniation are also prone to muscle pain in the lower limbs, because the protruding discs of patients suffering from lumbar disc herniation can compress In addition to the symptoms of lumbar pain, patients can also have radiating pain in the lower limbs; once again, viral infections and other reasons can also cause symptoms of muscle pain, such as patients with viral colds, in addition to the symptoms of the common cold, can also appear muscle pain, limb weakness and other systemic symptoms; finally, patients suffering from phlebitis and varicose veins can also have muscle swelling and pain in the lower limbs due to poor venous reflux in the lower limbs. cause swelling and pain in the muscles of the lower limbs. Therefore, it is necessary to pay attention to rest and avoid exertion, in addition to symptomatic treatment with anti-inflammatory and pain-relieving drugs. If the symptoms cannot be relieved, it is necessary to go to the hospital for further examination to clarify the cause.