For knee pain, the patient should first determine the cause of knee pain. If it is an acute injury, can not be cupped within 48 hours, after cupping will aggravate the patient’s knee bleeding, oozing blood, so that the swelling is more powerful, more pain. If it is wind-cold dampness osteoarthritis and old injuries, cupping on the knee area, because the knee part of the meat is not much, cupping to choose the size of the right fire can and the right cupping site, otherwise the cans are difficult to maintain. For acute injury to the knee caused by knee pain, must wait until the acute period of 48 hours before cupping or stabbing cupping treatment, so as to improve the patient’s swelling and relieve the patient’s pain.