Normal leukorrhea is milky white, and the leukorrhea during ovulation is usually clear and has a longer pulling degree. The yellowing and drying of the leucorrhea and the hard substance on the underwear indicate that the amount of leucorrhea is more, sticky and hard and yellow after it dries on the underwear, suggesting that the patient may have vaginitis, cervicitis or cervical columnar epithelial ectopic, etc. It is advisable to go to the hospital for examination to clarify the cause. 1. vaginitis: there are many kinds of vaginitis, such as the common mycotic vaginitis, where the leucorrhea is curdled or yellow bean residue The common type of vaginitis is mycotic vaginitis. In the case of trichomoniasis, it may be a purulent, foamy leucorrhea with a high volume that flows onto the underwear in a dry, hard, yellow state. Some patients are mixed infections, not only a kind of vaginitis, may be combined with mold and bacteria at the same time, this cause of the leucorrhea yellow, hard, treatment should be more active, follow the doctor’s instructions reasonable use of drugs, control inflammation, while paying attention to personal hygiene; 2, cervicitis: usually the cervical canal is infected with mycoplasma, chlamydia or gonococcus resulting in abnormal leucorrhea sex, yellow purulent liquid flow out, will make a dry, hard substance on the underwear. This situation requires both parties to take oral azithromycin or doxycycline at the same time to treat, during treatment pay attention not to have intercourse; 3, cervical columnar epithelial ectopic: cervical columnar epithelial ectopic is a normal physiological phenomenon, generally no special clinical manifestations, but some patients will appear leucorrhea, yellowing, odor. Treatment is mainly with suppositories, if the effect of drug treatment is not satisfactory, physical treatment methods such as laser or freezing can be given.