The urinary ketone body (++++) number after pregnancy indicates a condition of ketoacidosis. The main reason for this condition is the increase of estrogen in the body after pregnancy, which makes the gastrointestinal tract edematous, and then clinical symptoms such as nausea, vomiting and anorexia will occur. When the symptoms of nausea and anorexia gradually worsen, and when you cannot eat or eat less, it will lead to ketoacidosis. Ketone bodies will be found by checking the urine routine. It is recommended to correct the acidosis in time and to check the ions, if there is ionic disorder, the electrolyte disorder can be corrected at the same time in order to allow the normal growth and development of the embryo, and it is recommended to give treatment in hospital.