Men’s knee cold can be caused by cold, knee injury, lower extremity vascular disease, arthritis and other factors. 1. Cold: cold stimulation can lead to soft tissue damage in the knee joint after stimulation, which can lead to local microcirculation obstacles, thus showing symptoms such as cold knees. 2. Knee injury: trauma or sports injuries caused by the knee joint bone and soft tissue damage, such as patella fracture, meniscus injury, ligament damage, resulting in local blood circulation is damaged, which can appear in the knee cold. 3. Lower extremity vascular diseases: lower extremity arteriosclerosis occlusive disease, lower extremity thrombotic vasculitis and other lower extremity vascular diseases, lower extremity vascular ischemia and insufficient blood supply, which can lead to cold knees. 4. Arthritis: Osteoarthritis of the knee joint or rheumatoid arthritis and other diseases, due to the swelling of the articular cartilage and joint cavity fluid, which can lead to local blood circulation obstruction, easy to cause the symptoms of cold knees. When men’s knee cold should be timely medical treatment, under the guidance of specialists actively line of appropriate treatment, can help to reduce the knee cold and other uncomfortable symptoms as soon as possible.