Levonorgestrel releasing intrauterine system (LNG-IUS) is developed as a method of contraception, due to the high progesterone effect on the endometrium it is used for the treatment of adenomyosis, endometriosis, hyperplasia, and their symptoms such as menorrhagia, dysmenorrhea, and pelvic pain. It has a high contraceptive protection and low side effects. In this review, all the studies performed in our country about LNG-IUS were systematically investigated. A total of 36 studies were reached, 26 were involved in the treatment area; 10 of them were related to contraceptive use. Information about the use of LNG-IUS in primary care.