The lack of taste in the mouth may be caused by physiological factors (such as overwork, etc.), pathological factors (such as atrophic lingual inflammation, trauma, etc.). Specific causes, need to be further examined under the guidance of a doctor to be clear, it is recommended to follow the doctor’s instructions for treatment. 1. Physiological factors: when people are overworked, tired, stay up late for a long time and other bad habits, the mouth will feel no flavor and other symptoms of discomfort. It is recommended to change bad habits, combine work and rest, and take moderate exercise. In addition, with the growth of age, many old people’s taste buds will gradually degenerate, and there will be no taste in the mouth. 2. Pathological factors: because of tumor compression of the taste nerve or atrophic lingual inflammation and other diseases, there will be no taste in the mouth, regurgitation and other uncomfortable symptoms. 3. Trauma: due to burns or impact and other external factors, can cause tongue numbness, transient loss of taste, feel no taste in the mouth. After eliminating physiological factors, you should consult a doctor in time.