The amount of leukorrhea will increase after the use of birth control pills, leukorrhea is also known as vaginal secretion, normally there will be a small amount of leukorrhea in the female vagina, mainly secreted by the cervical glands as well as the vestibular glands, which play a role in protecting the vaginal mucosa and lubrication. The glands of the female reproductive tract are affected by sex hormones, and the more sex hormones are secreted, the more fluid is secreted by the glands. The main ingredient in contraceptive pills is female hormone, which may be simple progestin or estrogen-progestin combination. After use, especially when it is just used, the level of sex hormones in the body rises, which stimulates the glands to secrete hypersecretion leading to an increase in vaginal secretion, which is generally not accompanied by inflammatory manifestations such as itchiness or odor and other symptoms, and it may also cause side effects such as breast distension and pain, vaginal bleeding irregularly, and dizziness, etc. If it is an emergency contraceptive pill, the above symptoms will be more severe due to the larger hormone content, so the pill is more effective in protecting the vaginal mucosa and lubrication. In the case of emergency contraceptive pills, the above symptoms are more obvious due to the larger hormone content.