Different temperatures between the right and left hands include physiological factors (activity, exposure, etc.) and pathological factors (vascular disease, neuritis, etc.), which need to be analyzed specifically. 1. Physiological factors: ① if one hand is more active, while the other hand is relatively static, the temperature of the more active hand will be relatively higher; ② if one hand is often exposed to the environment, while the other hand is often placed in the clothes, according to the difference in ambient temperature, the temperature of the two hands will also be different. 2. Pathological factors: If there are vascular problems such as stenosis or neuritis in the upper limb, it will affect the blood circulation of the affected limb, resulting in a lower temperature of the affected limb, and the temperature of the left and right hands will be different. If the temperature of the left and right hands are not the same, you can go to the hospital in time, except for pathological factors, so as to avoid delaying the condition.