Pregnancy vomiting is a clinical symptom caused by the increase of blood chorionic gonadotropin level after pregnancy. Patients mainly show nausea, vomiting, dry vomiting in the morning, dislike eating greasy food and prefer to eat light food, which is a normal physiological reaction. If the patient’s nausea and vomiting are more serious, vomiting when eating or rice is difficult to enter, and cannot drink normally, it may lead to emaciation or acidosis, etc. This condition affects both the patient and the fetus and is considered pathological pregnancy vomiting. Patients need to check the urine routine and blood biochemistry to see if there is acidosis and electrolyte disturbance in the body, and if there is, fluids must be given to replenish fluids and correct the electrolyte disturbance.