Yellowish leukorrhea after pregnancy may be a normal condition of pregnancy, or it may be caused by gynecological inflammation, you should go to the hospital for examination to determine the cause, and then corresponding treatment.1, physiological factors: after pregnancy, due to the influence of hormone levels and accelerated metabolism, the vaginal environment changes, the vaginal secretion will increase, leukorrhea increases, the leukorrhea may be yellowish phenomena, which is a normal condition of pregnancy, no special treatment, it is recommended to pay attention to personal hygiene and frequent use of underwear. It is recommended to pay attention to personal hygiene and change underwear frequently; 2. Disease factors: yellowish leukorrhea after pregnancy, accompanied by odor and itching, you need to go to the hospital to do routine examination of leukorrhea to rule out gynecological inflammation, such as mycosis vaginalis, trichomonas vaginalis, etc. If the diagnosis is confirmed as gynecological inflammation, you should go to the hospital for routine examination of leukorrhea. If the diagnosis of gynecological inflammation, the situation is mild, can wash the vulva with water. If the situation is more serious, in order to avoid causing intrauterine infection, you can use medication under the guidance of the doctor, such as vaginal application of nitrofurantel ointment. After pregnancy, pregnant women should pay attention to the hygiene of private parts, try to wear loose, comfortable underwear, showering, changing underwear, light diet, eat more fresh vegetables and fruits, avoid eating spicy, stimulating, greasy food, to ensure sufficient rest time, to avoid fatigue and too frequent, unclean sex.