Sleeping at night irritable may be due to the following reasons: 1, mental psychological factors: too much mental tension, too much pressure on the Ambassador’s nerves tense difficult to sleep, feel irritable. Mental illness is also accompanied by restlessness, such as Alzheimer’s disease, depression, anxiety, schizophrenia and other diseases; 2, caused by bad habits: such as alcohol, coffee, strong tea at night, can be excessive stimulation of the nerves, so that the spirit can not be relaxed, it is difficult to sleep, irritability; 3, environmental changes: often jet lag or change the environment, is a very important reason. Light, sound, temperature, humidity and other factors in the house will also affect the quality of sleep, such as the weather is too hot or too humid, can also lead to the occurrence of the above symptoms; 4, full before bedtime: eat too much before going to bed, the abdominal pressure increases later or gastroesophageal reflux, the patient appeared to be lying down when the heartburn, chest tightness, and other symptoms, as traditional Chinese medicine said, stomach and not sleep uneasily.