Blood in the leukorrhea is an inflammatory manifestation of abnormal leukorrhea, a sign of female internal genital diseases, and should be taken seriously. Routine examination of leukorrhea can confirm the diagnosis. Cervical cancer, endometrial cancer, cervical polyp or submucosal myoma should be considered. The placement of intrauterine device can also cause bloody leucorrhea. As well as cervical erosion, endometritis and other diseases may cause it. The following three gynecological diseases often cause pus and blood leucorrhea: 1. moderate cervical erosion: II degree cervical erosion is when the erosion area accounts for between 1/3 and 2/3 of the cervical area, also known as moderate cervical erosion. When the cervical erosion has reached the moderate degree, the effect of drug treatment is no longer obvious, the common treatment is physical therapy. 2, post-abortion gynecological disease: post-abortion gynecological disease refers to the abortion is not strictly abide by the operating procedures, no qualified medical equipment or abortion itself has a corresponding gynecological inflammatory infection, low resistance or poor post-operative care, after the abortion led to some gynecological disease, after the abortion common gynecological disease are pelvic inflammatory, endometriosis, cervicitis, adnexitis, etc.. 3, vaginitis: vaginitis is the most common disease of the female reproductive tract infection, a general term for a variety of vaginal mucosal inflammatory diseases caused by different diseases, which can develop at every age and are prone to recurrent attacks. Common vaginitis include trichomoniasis, vulvovaginal pseudomonal yeast disease, bacterial vaginosis, aerobic vaginitis, atrophic vaginitis, and infantile vaginitis. Clinically, the main clinical features are the change in the nature of the leucorrhoea and the itching and burning pain in the vulva, which may be accompanied by painful intercourse, painful urination and urinary urgency.