Introduction: We evaluate the cause of abnormal uterine bleeding by using hysteroscope , by which pathological lesion can be seen under direct vision and help in giving immediate diagnosis and we also correlate the hysteroscopy findings with histopathology reports. Materials and Methods: It is a prospective study to be conducted to evaluate the intrauterine pathology in 50 premenopausal women with abnormal uterine bleeding attending gynaecological outpatient department at our institute. Any bleeding , thyroid disease, tuberculosis, asthma , hypertension, diabetes. On general examination pallor ,pulse and blood pressure were recorded. The cardiovascular , respiratory and nervous systems were examined. Patients were examined abdominally, per speculum and per vaginally .Patients haemogram, blood grouping, fasting and post pandrial blood sugar , serology (VDRL, HIV, HBsAg), ultrasound and other investigations like chest x ray , lipid profile , renal and liver test were done.Chi-square/Fisher Exact test has been used to find the significance of study parameters on categorical scale between two or more groups. Results: Out of the 50 patients , 41 patients were found to have abnormalities , 48 % of patients was diagnosed with hyperplasia , 14 % patients was diagnosed with polyp , 14 % patients was diagnosed with fibroid , 2 % patients was diagnosed with atrophy and 4% patients was diagnosed with cancer. Sensitivity, specificity, positive predictive value(PPV),negative predictive value (NPV) and accuracy of hysteroscopy are 85.71%, 67.44%, 30%, 96.97% and 70 %. This proves that hysteroscopy is better than dilatation and curettage and is highly accurate diagnostic tool. Conclusion: Hysteroscopy is a valuable, simple, low risk technique which allows an adequate exploration of the uterine cavity under visual control. It affords the diagnosis and treatment with speed and safety.