A cold bones feel cold, mostly considered low temperature and other physiological factors, may also be due to vascular disease, nerve compression or injury and other pathological factors. 1. Physiological factors: due to the low temperature of the surrounding environment, it will cause a large loss of body heat, slowing down the peripheral circulation of the extremities, skin and soft tissue temperature drop, sensory loss, will appear bone cold feeling. 2. Vascular diseases: such as occlusive vasculitis, varicose veins of the lower extremities, resulting in a decrease in circulating blood supply, if the environmental temperature drops at this time, vascular contraction occurs, there is a decrease in the temperature of the vascular nutrient region, there will be a feeling of cold pain in the lower extremities, as well as the joints of the phenomenon of fear of cold, cold. 3. Nerve compression or injury: such as elbow tube syndrome, carpal tunnel syndrome, lumbar intervertebral disc herniation and other nerve compression diseases, will lead to blood circulation obstacles in the innervated area, there will be a feeling of cold bones, but also the innervated area of sensory and motor abnormalities. If the feeling of cold bones after the weather turns cold is not relieved in time by measures such as keeping warm, it is recommended that the patient consult a doctor in time to clarify the cause of the disease and then carry out standardized treatment.