Young people’s knee pain may be caused by knee trauma, knee cold, knee joint wear and tear. 1. Knee trauma: young people’s knees are bumped and other trauma, so that the knee joint is damaged, such as fracture, ligament damage and so on, thus causing knee pain. You can take anti-inflammatory and analgesic drugs such as ibuprofen as prescribed by the doctor and pay attention to rest. 2. Cold knees: young people do not pay attention to warmth, making the knee cold, so that the knee joint internal sterile inflammation, knee pain. Usually pay attention to keep warm, wear thicker pants. 3. Knee wear and tear: young people like strenuous exercise, such as running, jumping, etc., resulting in greater wear and tear of the knee joint, which in the long run will lead to knee pain. The patient needs to exercise a smaller range, to avoid doing a big damage to the knee sports. Therefore, young people with knee pain, need to consult a doctor in a timely manner, clear reasons for targeted treatment, to avoid aggravation of the condition.