The most important thing is to have a good understanding of the nature of the body. Constipation and yellow tongue coating are related to excessive fire in the stomach, so you should eat more food to clear heat and lower fire, or use San Ren Tang for treatment. 1. San Ren Tang has the effect of clearing dampness and heat, which can regulate the function of the stomach and intestines and has a regulating effect on the symptoms caused by excessive fire in the stomach. 2. Gentian Liver Pill is a common Chinese medicine, which can improve the symptoms caused by excessive fire in the liver after taking. It can help improve symptoms such as insomnia, constipation, dysmenorrhea and bitterness. 3, constipation, yellow tongue and imbalance of intestinal flora are related, which can be improved by supplementing with lactobacillus tablets. Lactobacillin tablets contain a large number of intestinal beneficial bacteria, which can regulate intestinal peristaltic function and promote fecal discharge, so it can improve constipation. It can also improve the function of the intestinal system, and after the function of the intestinal system is improved, the phenomenon of yellow tongue can be eliminated.