The vaginal odor in early pregnancy should be combined with the previous history of vaginitis. Once there is a previous history of vaginitis, it should be ruled out whether there is a recurrence of the disease due to vaginal outflow caused by vaginitis attack, the appearance of leucorrhea or malaria. Another situation is that in the early stage of pregnancy, the uterus is more active and enlarges its volume, and it secretes more substances. If the odor, leucorrhea is more and sometimes with blood, it is recommended to go to the hospital in time to avoid aggravation of the condition.