The most common causes of walking thigh pain are strenuous exercise, lumbar disc herniation and muscle strain. 1. Strenuous exercise: if the patient carries out relatively intense exercise, such as long-distance running exercise or high intensity training of leg muscles, the accumulation of lactic acid will easily cause leg muscle soreness, generally can be carried out leg stretching and rest. 2. Lumbar disc herniation: The herniated lumbar disc compresses the nerve root, which can also be manifested as lower limb pain and numbness, and the symptoms of pain and soreness may be aggravated when walking, so the patient needs to pay attention to lumbar rest. 3. Muscle strain: due to various factors caused by the leg muscle strain, strained muscles may appear inflammatory reaction, and then the formation of soreness and swelling, acute strains can be ice packs. Caused by walking thigh pain causes more, and osteoarthritis, lumbar spinal stenosis, trauma and other factors are also related, if walking thigh pain persists without relief, you should go to the hospital in a timely manner to find out the cause of the disease, by the doctor targeted treatment.