OBJECTIVE To highlight the efficiency of intrauterine device (IUD) guidance during hysteroscopic adhesiolysis for severe intrauterine adhesions. METHODS A prospective, randomized trial. METHODS Private tertiary and referral infertility clinic. METHODS Seventy-one subfertile patients who underwent hysteroscopic treatment of intrauterine synechiae or adhesions. METHODS Thirty-six women in group 1 were initially examined by laparoscopy-hysteroscopy at first look, and an IUD was inserted during hysteroscopic adhesiolysis. The adhesions were further lysed by the guidance of IUD during the second-look office hysteroscopy, 1 week later. Patients were prescribed 2 months of estrogen as well as P therapy, and the IUD was removed by the end of this period. The uterine cavity was evaluated, and adhesions were further lysed by a third-look office hysteroscopy, 1 week after the removal of IUD. Thirty-five women in group 2 were similarly examined by first-look office hysteroscopy, and an IUD was inserted during hysteroscopic adhesiolysis. These patients did not undergo early intervention of office hysteroscopy, 1 week after the first procedure. They also used 2 months of estrogen and P therapy. The IUD was removed by the end of this period, and the uterine cavity was evaluated and adhesions were further lysed during a second-look office hysteroscopy. METHODS Pregnancy rate and live birth rate. RESULTS Spontaneous pregnancy rates after treatment were 17/36 (47.2%) and 11/35 (30%), and live birth rates were 10/36 (28%) and 7/35 (20%) in groups 1 and 2, respectively. These differences between the two groups were not statistically significant. CONCLUSIONS The method described especially for early intervention may prevent complications during the treatment of severe intrauterine adhesions and may present a secure and effective alternative for constructive clinical outcomes.