Most of the holding pain on the front side of the thigh is caused by fasciitis of the muscles or ligaments due to sports strain injury. After strenuous exercise or exertion, the muscles on the front side of the thigh may be strained or cold stimulation, pain symptoms, which is the soft tissue of the fasciitis. During strenuous exercise, the muscle fibers on the front side of the thigh contract violently, resulting in muscle fiber damage such as bleeding, and the accumulation of lactic acid and other metabolic waste products cause muscle soreness and pain. When the pain is mild, localized hot compresses can be applied, adequate rest, and generally the pain symptoms will be gradually relieved. If the pain symptoms are more serious, you can take painkillers under the guidance of a doctor to relieve pain, such as diclofenac sodium. It is recommended to warm up before exercise, and the amount of exercise should be gradual according to the individual’s physical condition, avoiding excessive strenuous exercise.