No sweating on the face may be due to different heat dissipation mechanisms, less heat dissipation through sweating, or less natural facial sweat glands, this is a normal phenomenon. However, it may also be caused by various diseases, such as sweat gland diseases, vitamin A deficiency, skin diseases, nerve injuries, internal organ disorders, etc. It is recommended to go to the hospital for a clear diagnosis: 1. congenital factors: 1. different heat dissipation mechanisms: the body’s heat dissipation mechanisms are body temperature elevation and sweating, if they are more inclined to dissipate heat by elevating body temperature, they do not need to dissipate heat by producing a lot of sweating; 2. less facial sweat glands: each The distribution of sweat glands differs from person to person, and if the facial sweat glands are less distributed, there may be no sweating on the face. Second, disease factors: 1, sweat gland disease: local sweat gland metabolic abnormalities, sweat gland deficiency, etc., can be manifested as a general or limited sweating; 2, vitamin A deficiency: when the human body is seriously lack of vitamin A, can make sebaceous glands, sweat gland secretion reduced, so that facial sweating reduced; 3, skin diseases: such as severe ichthyosis, scleroderma, leprosy, radioactive dermatitis, etc., can make the skin sweat glands are destroyed, causing limited 4, nerve injury: for example, transverse myelitis, poliomyelitis and local injury of sympathetic nerve, medulla oblongata, pontine brain, due to local neural regulation abnormalities, thus can cause generalized or restricted sweating; 5, visceral disorders: such as diabetes, uremia, chronic nephritis, mucinous edema, etc., can also destroy the sweating function of the skin sweat glands through various mechanisms, making the face sweatless. If it is caused by disease factors, it is likely to cause other serious diseases, such as heat stroke, due to the long-term inability to excrete sweat. Therefore, it is recommended that patients first go to a regular hospital for examination and treat the symptoms according to the results of the examination.