The presence of ketone bodies in the urine of pregnant mothers refers to the presence of ketone bodies in mid-pregnancy. The exact reason why ketone bodies are present depends on the situation. If it is due to the reaction of pregnancy, nausea, vomiting and inability to eat, it is considered that ketosis may be present at this time, which requires prompt hospitalization, intravenous rehydration, correction of electrolyte disturbance and antiemetic treatment. However, if urine ketone bodies appear only because of a long period of fasting without food before the examination, pregnant mothers can eat and drink some water as soon as possible, and usually in this case the urine routine will be rechecked again to find that the ketone bodies have disappeared, so there is no need to be too nervous. There are also some pregnant mothers who may have gestational diabetes, and if their blood sugar is too high, they may also develop diabetic ketoacidosis, which needs to be taken seriously.