Thigh muscle pain is serious and cannot be lifted, the reasons are as follows: first, workers need to carry out long squatting work, resulting in serious muscle strain, can cause inflammatory reaction within the quadriceps muscle, quadriceps muscle contraction, diastole is restricted, thus causing muscle pain, can not be normal force, after several days of rest and local hot compresses, pain symptoms can be relieved; second, thigh muscle by external force leading to muscle Second, the thigh muscle is strained by external force, which can cause injury congestion and edema in the thigh muscle, stimulate the nerve fibers in the muscle, resulting in pain and weakness symptoms, give local continuous cold compress to the thigh, and take oral medicine such as Cao Wu Jia Su tablets and Pan Long Qi tablets to eliminate swelling and pain symptoms, which can restore the normal contraction and diastole of the thigh muscle.