Thigh like needle-like stabbing pain, possible diseases are as follows: First, consider the acute strain of the thigh muscle, may be due to strain a thigh muscle in sports, it may be in the stretching functional training, such as in doing splitting activities, leg press activities, pulling the inner thigh muscle, this will cause acute injury to the thigh muscle, so it will be manifested as a local needle-like pain and tear-like pain. Second, consider lumbar disc herniation or lumbar spinal stenosis. In the above two cases, when the sciatic nerve is compressed, it often causes radiating pain in the lower limbs, often manifesting as radiating pain in the back of the thigh. Sometimes the pain can also radiate to the calf and foot, accompanied by numbness in the foot.