If there is positive urine ketone body or water-electrolyte disorder, it is recommended that the pregnant woman should receive timely infusion to correct it, so as not to affect the development of the fetus, but also to affect the physical health of the pregnant woman. The severity and duration of pregnancy reactions vary greatly depending on the physical condition of each pregnant woman, and most of them will be reduced or disappear after the third month of pregnancy. If the reaction is still heavy in the fourth month of pregnancy, you need to do an ultrasound in time to observe whether the embryo is developing normally, and also check the endocrine, such as thyroid function, blood sugar, etc. Pregnant women should eat less and more meals, eat light and easily digestible food, and can take oral vitamin B6 to stop vomiting.