The causes of pink discharge when a woman’s period is approaching are: First, it may be due to the endometrium is less affected by the decline in hormone levels, only a small portion of the endometrium peeled off, due to less blood dilution and then discharged to the vulva will be presented as pink discharge. Secondly, when women have anemia, there will also be pink discharge when menstruation is coming. Third, there may be women with cervical inflammation, cervical erosion of the cervix will have a small amount of pink discharge along with the white belt. When a woman has a pink discharge when she is about to have her period, she should pay attention to whether there is anemia, if it is not caused by anemia, it is best to do gynecological examination and ultrasound to clarify the cause of the disease, and symptomatic treatment is good.