The odor after delivery is due to inflammation of vaginal secretions and stimulation of the vulva. If the vulva is not washed in time and the underwear is not changed every day, the odor may occur. In such cases, it is necessary to examine the discharge to determine what kind of inflammation is present, and vaginal plugs can be used to treat the problem. During the puerperium, if the malodorous fluid is not completely eliminated, it is necessary to rule out any puerperal infection. At this time, routine blood tests, including ultrasound, should be performed to determine if the white blood cells are high, and oral anti-inflammatory medication can be administered according to the situation. You should wash your vulva every day and change your underwear every day to avoid cross-infection. When there is a chance of cross-infection, it will cause persistent odor in the vulva.