The paper presents diagnostic methods employed at the Gynaecological Ward of the City Hospital in Pruszków and the results of HSG and laparoscopy examination, with special attention being drawn to the usefulness of these methods in finding out the causes of infertility. 51 patients with primary and second infertility were examined. HSG and laparoscopy make it possible to diagnose correctly the cause of infertility. They also enable adequate and early classification of patients for further diagnosis and treatment at highly specialized centres dealing with the problems of infertility.