The emergence of irritable mood is mainly considered to be caused by life disorders, mental stress, hormone disorders, hyperthyroidism and mental diseases: I. Physiological factors 1. Life disorders: poor daily sleep quality, frequent late nights, and lack of adequate rest for the body will lead to irritable mood; 2. Mental stress: caused by excessive work pressure, interpersonal tension and other reasons Mental stress, mood will also be affected accordingly; 3, hormonal disorders: If women are in menstruation or perimenopause, hormonal disorders will affect women’s mood and appear irritable. Second, pathological factors 1, hyperthyroidism: if mood irritability accompanied by irritability, hand trembling, neck mass and other symptoms and signs, you should promptly go to the hospital to check the thyroid function; 2, mental illness: such as suffering from schizophrenia, mania, anxiety disorders and other mental illnesses, will also appear mood irritability phenomenon. In short, if due to mood irritability, not accompanied by other physical symptoms, consider whether it is caused by excessive stress, staying up late, etc. If there is no obvious reason, and the mood irritability lasts too long and affects daily life and study and work, go to the hospital in time to receive professional assessment, clarify the cause and treat it in time.