The yellow water after ten days of abortion is considered to be an infection, which may be exogenous infection or endogenous infection. 1. Exogenous infection: If you don’t pay attention to personal hygiene after abortion, or the surrounding environment is polluted, or the abortion surgery process uses the disinfection is not complete or contaminated surgical instruments, in this case, the pathogenic bacteria will enter the reproductive tract, which will cause infections of the reproductive organs, such as cervicitis, endometritis, etc., abnormal secretions. 2. endogenous infection: in the human reproductive tract itself exists microorganisms when the human body resistance is normal, these microorganisms belong to the balance of the state, will not cause disease, but if the resistance is reduced, the micro-ecology will be out of balance, and other pathogenic bacteria will be reproduced in large quantities, such as gardnerella, anaerobic bacteria, which causes endogenous infection, abnormal secretion. There may be other reasons for the yellow water ten days after the abortion, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.