There has been no research to prove that drinking moisture tea can cause hair to become oily. Hair oil causes more reasons, if the weather temperature and other physiological factors lead to hair oil, is a normal phenomenon, do not need to worry too much, often wash can be. In addition to physiological factors, it can also be caused by pathological factors such as liver fire. Liver fire is mainly due to other visceral malfunction, involving the liver, emotional disorders, easy to get angry and hurt the liver, or due to dietary intemperance, often smoking, drinking, eating spicy food, etc., which can be manifested as dizziness, head swelling and pain, red face and eyes, dystocia (coeruleus pain), as well as irritability, etc., you can take medication under the guidance of a physician for treatment. If you feel unwell, it is recommended that you go to the hospital for standardized treatment under the guidance of a doctor, and do not deal with it blindly on your own, so as not to make a mistake.