The objective. To assess the quality of life and sexual function of patients with endometrioid ovarian cysts depending on the state of ovarian reserve. Patients and methods. The examination included 100 patients with endometrioid ovarian cysts aged 23 to 35 years, not interested in pregnancy, who were divided into 2 groups depending on the state of ovarian reserve. Assessment of the quality of life and calculation of the index of sexual function were performed using questionnaires for assessment of the individual quality of life and the Female Sexual Function Index (FSFI, 2000). Results. The findings of the study indicate a decreased quality of life and sexual function in case of endometrioid cysts and low ovarian reserve. No significant differences in complaints of dysmenorrhoea, dyspareunia or chronic pelvic pain were obtained among the groups of patients. But the group of patients with normal ovarian reserve most often had complaints of ovulation pains as compared with the group of patients with low ovarian reserve. Patients with low ovarian reserve more often complained of feeling worse in general (83.6%), anxiety (63.6%), emotional lability (76.4%), depression (87.3%) as compared with patients with normal ovarian reserve. As has been found, the index of satisfaction with health (I5) is by 1.5 times and the index of satisfaction with the present (I2) by 2 times less in patients with low ovarian reserve as compared with the control group. The indices of subjective negative (ISN) and of subjective positive (ISP) did not differ significantly in both groups. The average level of the quality of life of patients with low ovarian reserve was 31.45%, whereas in patients with normal ovarian reserve - 46.11%. The average overall score of the index of sexual function in patients with low ovarian reserve was 16.6, and in patients with normal ovarian reserve - 24.3. Conclusion. The quality of life and sexual function in patients with endometrioid ovarian cysts depend on the state of ovarian reserve: a direct correlation is noted between a decrease of ovarian function and change in the parameters of study. The cohort of patients with endometrioid cysts and decreased ovarian reserve deserves special attention not only of obstetriciansgynaecologists but also of medical psychologists.