The color of normal leucorrhea is clear or white, but if it appears yellow like thick phlegm-like leucorrhea, it is considered to be caused by gynecological diseases such as vaginitis, cervicitis or celiac disease. There are many reasons for these gynecological diseases, the first is not to pay attention to personal hygiene, do not often change, wash underwear, resulting in bacterial growth and cause. The first thing you need to do is to change and clean your underwear regularly, so that the bacteria can grow. Unclean sexual life, chaotic sexual life, etc., easily infected. The use of unqualified sanitary pads, lack of attention to menstrual hygiene and use of unqualified condoms during menstruation can also lead to bacterial infections. Therefore, once you find that the leucorrhea looks like thick phlegm, you should go to the doctor in time, perform routine leucorrhea examination and other related tests to clarify the cause, and then treat it with the right medicine as soon as possible.