Yellowish and heavy leucorrhea may be caused by vaginitis or cervicitis. There are many types of vaginitis, including trichomoniasis, mycobacterial vaginitis, bacterial vaginitis, senile vaginitis, and inflammation caused by sexually transmitted diseases. If it is caused by cervicitis, it is best to have a bacterial culture of the cervical secretions because most of the causes of cervicitis are due to mycoplasma, chlamydia or gonococcal infections, which are easily resistant to drugs, so it is best to use drugs according to the results of laboratory tests and drug sensitivity.