The following reasons are common in girls with cold knees: First, the peripheral environmental temperature is too low, not pay attention to the knee joint warmth, so that the knee joint is cold, the patient can show the clinical symptoms of cold knee joints, accompanied by knee joint pain, swelling, and even limited activities. Second, patients usually do not participate in physical exercise, so the power and strength of the muscles around the knee joint is weak, blood circulation will be significantly affected, so the knee joint is easy to cold, and produce a decline in the stability of the knee joint, the patient will be manifested in the knee joint instability, easy to wear and tear of the knee joints to produce pain symptoms. Girls with clinical symptoms of cold knee, must be early diagnosis, early treatment, so that the clinical symptoms can be quickly relieved, the patient should usually strengthen the knee joint warmth and muscle strength around the knee joint training, to prevent the clinical symptoms of cold knee.