Uterine fibroids are the most common benign tumors in the female genital canal. Uterine fibroids can affect pregnancy, which is related to the size and growth site of fibroids. 1. Fibroids in the uterine horn can cause distortion and deformation of the fallopian tubes, affecting the passage of sperm or fertilized eggs and reducing the chance of conception. 2. Submucosal fibroids occupy the uterine cavity, which is not conducive to the fertilization of eggs. 3.Large interstitial fibroids can change the normal shape of the uterine cavity and compress the fallopian tubes, which can deform the uterine cavity, thus affecting the passage of sperm and the fertilization of the egg and fetal development. 4. Broad ligament fibroids may distort the fallopian tubes and squeeze the lumen, affecting their patency, or distort the ovaries and widen the distance between the ovaries and the fallopian tubes, hindering the egg collection function of the umbrella end of the fallopian tubes. 5. Fibroids in the cervix can compress the cervical canal, obstruct the passage or change the orientation of the cervical opening, which is not conducive to sperm entering the cervical opening. The incidence of infertility in patients with uterine fibroids is about 22-32%, with the highest incidence of infertility in submucosal fibroids. Generally, small or solitary subplasmic and interstitial fibroids do not affect conception and pregnancy.