Coldness in one hand may be caused by low ambient temperature and poor vascular conditions. 1. Low ambient temperature: If the ambient temperature is low and you don’t do a good job of keeping your hands warm, you may experience a cold hand. 2. Poor vascular conditions: If the local vascular conditions are poor, blood vessels are narrowed or occluded, making the blood circulation ability to decline, there will also be a cold hand. One hand is cold, exclude the environment caused by, suggest actively to the regular hospital, clear what is the cause, and then targeted treatment. Usually must pay attention to keep warm, to avoid the body cold, but also to keep the spirit of relaxation, to avoid too much tension, at the same time to ensure that sleep enough, do not stay up late, but also pay attention to diet and nutritional balance, more physical exercise, etc., is beneficial to the health of the body.