The two legs are particularly uncomfortable at night, which may be related to the following reasons: 1. It may be caused by excessive fatigue, for example, the patient did high-intensity labor or did high-intensity exercise involving the lower extremities during the day, which may cause the muscles of the lower extremities to be particularly fatigued and cause lactic acid to be deposited inside the muscles, and then make both lower extremities have obvious soreness and uncomfortable feelings. This feeling will be significantly aggravated at night when sleeping. 2, may be due to osteoporosis, this situation is often seen in the elderly osteoporosis patients. In its onset, there may be pain in the lower extremities and lumbar spine during night rest. 3, may be due to osteoarthritis, the most common is bilateral osteoarthritis of the knee joint, in the onset of this type of disease, often manifested as rest pain during night rest. 4, this condition is likely to be caused by old injury, for example, if there are old bilateral lower extremity fractures or severe soft tissue blunt contusions, after their recovery may leave behind local poor blood circulation, or sterile inflammation. During nighttime sleep, this often manifests itself as a particularly painful and uncomfortable localization.