Severe pregnancy sickness can be relieved by adjusting diet and seeking medical treatment. 1. Adjusting diet: Pregnant women should try to eat light and easy-to-digest food. You can try various kinds of food for many times, and whichever food does not react so violently to pregnancy vomiting after eating it, you can eat more of it appropriately. You can take small meals, avoid contact with odors, get more rest, and keep your mood happy. 2. Seek medical treatment: If the pregnancy vomiting is very serious, what you eat and vomit, affecting the health and fetal development, you need to consult a doctor in time for examination. If electrolyte disorders and other conditions, you need to be hospitalized in time, under the guidance of the doctor for infusion therapy, and the application of drugs to stop vomiting. Pregnant women who experience severe vomiting need to seek timely medical attention and treatment under the guidance of a doctor.