Yellow scum-like material in the vagina is usually abnormal leukorrhea in the vagina when suffering from bacterial vaginitis, mycosis fungoides or trichomonas vaginitis, etc. It needs to be analyzed specifically. 1. Bacterial vaginitis: yellow residue in the vagina may be due to the bacterial flora imbalance in the vagina, pathogenic bacteria become dominant flora caused by bacterial vaginitis. In addition to the yellow scum-like vaginal discharge, patients may also have vulvar itching, discharge odor and other manifestations. 2. Mycotic vaginitis: vaginal yellow scum-like material may also be caused by mycotic vaginitis, the patient’s vaginal secretions are scum-like, if the combination of bacterial infections, vaginal yellow scum-like secretions may also occur. 3. Trichomonas vaginitis: If a woman is infected with trichomonas, after suffering from trichomonas vaginitis, it is also possible to have yellow scum-like vaginal discharge. There may be other reasons for the yellow vaginal discharge, and the patient’s medical history and the examination results of vaginal discharge should be combined to make an accurate judgment, and it is recommended to clarify the cause of the disease under the guidance of the doctor.