Yellowish-green discharge with odor during pregnancy may be caused by trichomoniasis, bacterial vaginitis, or pelvic inflammatory disease. The gynecological inflammation during pregnancy is likely to cause miscarriage or premature delivery, and the fetus is also prone to skin diseases after birth, so medication should be applied under the guidance of a physician.1. Trichomonas vaginitis: Initial treatment can be oral metronidazole, or nifurturtimox vaginal pessary can be placed in the vagina after washing the vulva before bedtime. While pregnant women are treated for trichomoniasis, their husbands should also be treated and sexual intercourse should be avoided until cured. During the treatment period, keep the vulva clean, wash 1-2 times a day, underwear and towels should be disinfected by boiling for at least 15 minutes and exposed to the sun to destroy pathogens; 2. Bacterial vaginitis: bacterial vaginitis can also appear as yellow-green discharge when the condition is severe, use clindamycin vaginal cream to apply in the vagina for local treatment, prohibit sexual intercourse during treatment and keep the vulva clean The pelvic inflammatory disease: pelvic inflammatory disease during pregnancy can also appear yellow-green discharge, accompanied by odor, need to choose under the guidance of the doctor, the fetus does not affect the oral treatment of antibiotics.