The color of normal leukorrhea is transparent or white, if there is yellow phlegm-like leukorrhea, it is considered to be caused by vaginitis, cervicitis or cervical erosion and other gynecological diseases. There are many reasons for these gynecological diseases, the first is not pay attention to personal hygiene, not often change, wash underwear, resulting in bacterial growth and cause. Long-term through the tight, chemical fiber class breathable underwear, resulting in perineum moisture, promote the growth of bacteria and cause. Infected easily due to unclean sex and chaotic sex life. Using unqualified sanitary pads during menstruation, not paying attention to menstrual hygiene, using unqualified condoms, etc. can also lead to bacterial infection. Therefore, once you find that the leukorrhea looks like thick phlegm, you have to go to the doctor in time, perform routine leukorrhea and other related examinations to clarify the cause of the disease, and then use the appropriate medication to treat the symptoms as soon as possible.