Sore legs and feet are usually caused by muscle strain, varicose veins of the lower limbs, acute arterial embolism, lumbar spine disease and other reasons. 1. muscle strain: usually due to excessive activity of leg muscles, the corresponding muscles are in a state of continuous tension, resulting in muscle fiber hemorrhage, edema, lactic acid and other metabolites accumulation, clinical manifestations of leg and foot pain, weakness and other symptoms. 2. varicose veins of the lower limbs: usually manifested as varicose saphenous veins, which may cause blood circulation disorders in the leg tissues, and eventually lead to leg and foot pain. 3. acute arterial embolism: it may lead to blood circulation disorder in the leg tissues of the patient, and then produce symptoms of leg and foot pain. 4. lumbar spine diseases: such as lumbar spinal stenosis, lumbar disc herniation, etc., which may lead to inflammatory stimulation of the patient’s lower limbs and neuromechanical damage of the lower limbs, etc., and thus lead to the occurrence of leg and foot soreness. Sore legs and feet may also be caused by other reasons, it is recommended that the patient consult a doctor in time, under the guidance of the doctor to clarify the cause of the disease in order to take appropriate treatment measures.