A little pain in the leg after being hit by an electric car is more serious if there are local soft tissue injuries, meniscus injuries, synovial tissue injuries, fractures and so on. 1. Local soft tissue injury: it may be hit by an electric car, resulting in soft tissue injury of the leg, such as muscle tear, ligament rupture, joint capsule rupture, nerve contusion and so on. 2. Meniscus injury: meniscus in the knee joint cavity can play the role of lubrication, shock reduction, support, stability, after being hit by an electric car, easy to cause meniscus extrusion or damage, resulting in tearing and so on. 3. Synovial tissue injury: there are cartilage, ligament, synovial membrane and other tissues in the knee joint cavity. After being hit by an electric car, it may cause the synovial tissue to ooze and bleed, triggering a strong local inflammatory reaction. 4. Fracture: when hit by an electric car, if there is a fracture, it will also lead to a little pain in the leg. If the symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to clarify the cause and then give targeted treatment.