Uterine leiomyomas are basic amiable tumors in female genital organs, which can be isolated into subserosal leiomyomas, intramural leiomyomas, submucosal leiomyomas, cervical leiomyomas, and wide tendon leiomyomas relying upon the development position. Various kinds of uterine leiomyomas can be showed as menorrhagia, low stomach mass or dysuria, and poo trouble and other clinical side effects. In China, the commonness of uterine leiomyomas is about 11.21%, and the pace of harmful change is about 0.30%. Over 20% of ladies beyond 35 years old have uterine leiomyomas. Because of moderate tumor improvement and no undeniable clinical side effects, numerous patients were analyzed by physical assessment, so a few patients neglected to get early treatment, or even didn't get treatment. The etiology and pathogenesis of uterine leiomyomas is as yet not extremely clear. Estrogen is the fundamental advancement factor for the development of uterine leiomyomas, and progesterone plays a synergistic impact . The event of uterine leiomyomas was the aftereffect of common collaboration among different components including age, number of births, weight, smoking, pulse, diet, stress, and condition, yet whether a portion of the hazard elements can elevate estrogen and progesterone to actuate uterine leiomyomas has no complete end . In spite of the fact that the connection between oral contraceptives and uterine leiomyomas has been generally considered, however contrasts despite everything exist . Contrasted and the individuals who have never utilized oral contraceptives, diminished, comparative or raised consequences of the danger of uterine leiomyomas in ladies utilized oral contraceptives have been accounted for . To additionally explain whether oral contraceptives expanded the danger of uterine leiomyomas, this case-control study investigated the connection between oral contraceptives and the rate of uterine leiomyomas in Chinese ladies of childbearing age, in this way giving a reference to the protected utilization of oral contraceptives just as checking and avoidance of unfavorable responses of contraceptives.