Objective To investigate the compliance of adolescent patients with polycystic ovary syndrome (PCOS) in long-term treatment by access to care and continuity of care(ACC) on 86 cases. Methods A prospective cohort study was taken for 6 months on adolescent patients diagnosed as PCOS for the first time in out-patient department from November 2009 to June 2012. These patients were selected and divided into ACC group and regular follow-up group according to the different modes of follow-up visit. The relevant data including body mass index (BMI), clinic visit rate and rate of medication adherence were compared in the first visit and 3rd, 6th month in the follow-up visit. Results 86 patients were enrolled with 43 in ACC group and 43 in regular follow-up group. The baseline information was similar between the two groups. There were no statistically significant difference between groups in BMI, clinic visit rate and rate of medication adherence after 3 months (P>0.05). However, after 6 months, BMI, clinic visit rate and rate of medication adherence were significantly improved in the ACC group compared to the regular follow-up group (22.33±7.31 vs 24.59±7.8 kg/m², 97.7% vs 81.4%, 97.7% vs 76.7%, P＜0.05, respectively). Conclusion ACC could improve BMI, clinic visit rate and medication adherence of adolescent patients with polycystic ovary syndrome in long-term treatment.