If a woman has a gelatinous leucorrhea with a transparent color like egg white during ovulation, without any vulvar itching or odor, it is usually considered to be a normal discharge during ovulation. Because of the high level of estrogen stimulation during ovulation, the vaginal secretions, after the appearance of this leucorrhea, the woman will soon appear ovulation performance. However, if a woman has gelatinous leucorrhea for a long time, with yellow color, obvious odor, and vulvar itching symptoms, and the gelatinous leucorrhea increases after intercourse, it may be due to vaginitis or cervicitis, which usually requires routine leucorrhea examination to determine, and then vaginal medication according to the infecting pathogen. If a woman suddenly develops gelatinous leucorrhea in late pregnancy, it is likely that the shortening of the cervical canal has caused the discharge of mucus plugs, which is a sign of preterm labor.