Always vomiting may be caused by physiological factors, such as pregnancy; it may also be caused by certain diseases, such as functional dyspepsia, chronic gastritis, meningitis and so on. 1. Physiological factors: In about six weeks of pregnancy, chorionic gonadotropin (HCG) increases in the pregnant woman’s body, which will significantly inhibit gastrointestinal motility, and then the phenomenon of pregnancy vomiting. After 12 weeks of pregnancy, the symptoms will disappear naturally as the level of HCG in the body decreases. 2. Pathological factors: (1) digestive system diseases: such as functional dyspepsia, chronic gastritis, peptic ulcer, etc., inflammation, ulcers, etc. can stimulate the gastric mucosa, the strong contraction of the stomach so that the stomach or part of the contents of the small intestine through the esophagus, oral discharge, the appearance of the old vomiting. (2) neurological diseases: such as meningitis, encephalitis, cerebrovascular disease, etc., inflammation or high intracranial pressure stimulation can induce nerve impulses, which are transmitted to the vomiting center, causing the symptom of frequent vomiting. There are many other reasons that cause patients to vomit all the time, after ruling out the possibility of pregnancy and adjusting dietary habits, if the symptoms of vomiting are still not relieved, it is recommended to go to a regular hospital in time to consult a doctor, to clarify the cause of the disease, and then carry out targeted treatment under the guidance of the doctor.