Why does endometriosis lead to infertility?

Endometritis is a common gynecological disease, which can lead to persistent pain in the lower abdomen of women, bleeding after coitus and even infertility. The main cause of infertility is endometrial adhesion when endometriosis is serious, which can lead to less menstrual flow or amenorrhea, which not only affects ovulation but also fertilized eggs are not easy to implant in the endometrium, which can cause infertility.