There are many causes of excessive sweating in the stomach. First of all, it is considered to be caused by plant nerve dysfunction. Plant nerve dysfunction can cause weakness and excessive sweating in the body, and excessive sweating in the stomach is one of its symptoms, which can be improved by supplementing vitamin B1 and vitamin B2 in daily life. Secondly, the sweating of the stomach may be caused by certain diseases, such as diabetes and thyroid disease, which can cause excessive sweating in various parts of the body and require treatment of the original disease to improve. The sweating of the stomach is not excluded as a normal physiological reason, the high temperature of the environment will cause capillary expansion, sweat glands secrete sweat for heat dissipation, is a normal physiological reason, usually the temperature of the environment can be improved after the drop.