Cold hands in summer may be due to low ambient temperature, such as being in a low-temperature air-conditioned room, or due to qi deficiency, blood deficiency, or qi depression. Cold hands in summer may be due to low environmental temperature, such as summer air-conditioning room temperature is often low, can lead to physiological limb cold, can be improved by adjusting the environmental temperature or add clothing. Qi deficiency: It may be caused by congenital weakness, poor diet, emotional disorders, overwork, prolonged illness and other factors. Patients may have pale face, fatigue, self-sweating (involuntary sweating during the day, aggravated by the slightest movement of sweating), etc. They may also have cold hands. Blood deficiency: Blood deficiency may be caused by congenital poor physique, prolonged illness, excessive thinking, weak spleen and stomach. Patients show dizziness, pale face, lightheadedness, dry skin, etc. Cold hands in summer may occur. Qi Depression: Qi Depression may be caused by factors such as emotional disorders and feeling external evils. Patients may have symptoms such as loss of appetite, chest tightness, distension and pain in the chest and ribs, and some patients show cold hands in summer. There are many reasons for cold hands in summer, patients can go to the hospital, identify the cause of the disease, specific treatment and medication should follow the doctor’s instructions.