The vast majority of drug abortions will not affect future fertility clinically, but individual cases may cause infertility, mainly because of the following reasons: first, there is no good rest after the drug abortion, resulting in a decrease in body resistance and the formation of infection, so that not only infection to the uterine cavity, may be infected to the fallopian tubes, pelvic cavity, resulting in tubal obstruction, resulting in inflammation of the endometrium, so that This may lead to infertility in clinical practice, so attention must be given after a medical abortion, in addition to strengthening nutrition, and also pay attention to proper rest. The second one is that clinically, if infertility is affected, it may be that the medical abortion is incomplete and not handled in time. It is advisable to go to the hospital for 7-10 days after the medical abortion to do the corresponding examination, if it is found that there are still residues in the uterus and the residual tissues are relatively large, the uterus should be cleared as soon as possible. If a large residual tissue is not cleared, even if it can be mechanized, it may form calcified foci in the uterine cavity, which may cause infertility in clinical practice.