Pink discharge in late pregnancy will disappear after a while, it may be caused by preterm labor, preterm labor, vaginitis, cervical polyps and so on, need to be analyzed specifically. 1. Pre-eclampsia and preterm labor: When the uterus is contracting, the fetal prelude will fall, and there will be a small amount of bleeding when the fetal membranes and the uterine wall are peeled off in small quantities. The beginning is usually irregular uterine contractions, accompanied by a small amount of vaginal bleeding or bloody discharge, which may be pink in color. 2. Vaginitis: some serious vaginitis may easily lead to irritation of the vaginal mucosa or vulvar mucosa, which in turn may cause rupture of the mucosa and capillary hemorrhage, resulting in pink discharge, usually in small amounts. 3. Cervical polyps: the presence of cervical polyps, once subjected to adverse stimuli, such as inflammation or touch stimulation will bleed, causing pink discharge. If there is any discomfort, it is recommended to go to the regular hospital to receive examination, according to the specific results of the examination to deal with.