The pain in the meridians of the thigh may be caused by the following reasons: 1. due to trauma, which is most common in orthopedics, as the thigh area suffers direct trauma, which causes the blood to spill out of the veins and produce bruising, which then blocks the meridians and produces pain in the tendons and veins. 2. may be caused by cold, which is also known as cold condensation in Chinese medicine, and cold leads to stagnation, which often causes local contracture pain. 3. 3.It may be caused by the local blood circulation, which is often seen in patients who have been curled up, sitting or standing for a long time or have local pressure, resulting in local blood circulation, which causes pain, making the patient feel pain in the thigh veins. 4.The pathology around the thigh may also cause the thigh meridians to be inaccessible, resulting in pain, such as the possible existence of joint inflammation, or lumbar lesions, these conditions may also cause the above symptoms.