The causes of sweating at the back of the head can be divided into physiological and pathological causes, as follows: 1. Physiological causes of sweating at the back of the head are due to the high temperature of the environment in which the human body is located, and due to the human hair cover, causing excessive heat accumulation at the back of the head, resulting in the human sweat glands to secrete sweat for heat dissipation, so causing the symptoms of sweating at the back of the head; 2. The cause of the back of the human head always sweating, may be the kidney weakness, the human body if the kidney weakness, often cause the human body night sweats, weakness, sleepiness, drowsiness and other adverse symptoms appear. The pathological cause of sweating at the back of the head is not excluded because of diabetes, as the blood sugar in the body fluctuates a lot, thus inducing the symptoms of excessive sweating in various parts of the body.