Leukorrhea refers to a little whitish or transparent and odorless secretion in the vagina of healthy women for moistening the vagina. Usually leukorrhea is profuse after menstruation or in the period between two cycles of menstruation or during pregnancy. This is physiological leukorrhea and is regarded as normal. Normal leukorrhea is a yin fluid in the body derived from cereal nutrients which are transformed by the spleen and stomach, stored in the kidney, governed by the conception vessel, controlled by the belt vessel and distributed continuously in the uterus.