There are many causes of thirst: 1. Heart fire is hyperactive, resulting in heartburn and thirst, which requires oral administration of Tian Wang Xin Dan. 2. Liver and gallbladder damp-heat, resulting in thirst, bitterness, sticky mouth and irritability, which is treated with Gentian Liver Pill. 3. Yin deficiency and fire, resulting in thirst, dry mouth, five heartburn and irritability, which requires oral administration of Liu Wei Di Huang Wan. 4. Diabetes mellitus, resulting in thirst and excessive drinking, body wasting and weakness, which requires diet control and oral administration of glucose-lowering drugs or insulin. 5. 5, hyperthyroidism can appear thirsty drinking, irritability. 6, oral medications caused by thirst, such as diet pills, diuretics, antihypertensive drugs, antipsychotics, etc. can appear thirsty symptoms. 7, over-eating salty or sweating too much, drinking too little water, etc.