Lower back pain and calf soreness and numbness may be caused by physiological reasons, lumbar disc herniation, sciatic neuropathy and lower extremity vascular disease and other pathological reasons. 1. Physiological reasons: due to excessive exercise, running and other reasons caused by the accumulation of lactic acid in the calf muscles, the stimulation of the surrounding tissues can cause the patient to appear lumbar pain calf soreness and numbness of the feet. 2. Lumbar intervertebral disc herniation: the protruding intervertebral disc compresses the nerve root, and some patients may have no symptoms of lumbar pain, mainly in the innervated area, such as soreness, pain, numbness and other symptoms of the calf. 3. Sciatic nerve lesions: sciatic nerve injury caused by sciatic neuritis, pyriformis syndrome, etc., the patient may appear lumbar pain calf soreness and numbness of the foot symptoms. 4. Lower extremity vascular disease: such as lower extremity arterial embolism, lower extremity venous thrombosis, varicose veins of the lower extremities, resulting in poor blood circulation in the lower extremities, local ischemia and hypoxia and the symptoms of back pain calf pain and numbness. There may be other reasons for the waist without pain calf soreness and numbness, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.