Abstract: Infertility is more of a social problem rather than a medical problem. The term “subfertility” used to describe any form of reduced fertility that results in a prolonged duration of unwanted lack of conception. The difficulty to conceive or subfertility constitutes a major social and psychological burden amongst couples especially in lower-middle country like Bangladeshi women. Accurate and precise diagnosis is mandatory prior to management of case. Although there are many diagnostic tests available, the clinical presentation of each patient can usually be linked to specific and efficient testing strategies. Ultrasonography is an accurate and reliable test for evaluation of subfertilty. Ultrasonographic imaging is easy to use, safe, and readily available noninvasive means to evaluate fertility potential. The purpose of the study is to evaluate and correlate the clinical findings with ultrasonography finding of the subfertile female patient. A hospital based cross sectional study conducted Department of obstetrics & Gynecology (Infertility unit), Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbag, Dhaka. Sample was selected from the population by Purposive sampling. All subjects were subfertility in reproductive age group. Total 50 patients were enrolled for study after fulfilling inclusion and exclusion criteria Detail demographic data were collected from the patients and recorded in structured case report form. All collected questionnaire checked very carefully to identify the error in the data. Data processing work consist of registration schedules, editing computerization, preparation of dummy table, analyzing and matching of data. Maximum numbers of patients (62.0%) were between 20-30 years age group with mean age was 26.47 ± 11.57 years. Detailed history taking, examination suggested that, etiology for subfertility were (14%) for tubal factors and (26%) ovarian factors. Clinical and pathological factors for subfertilty were verified by pelvic ultrasonography in all the cases. In case of female infertility, uterine factors account for 32% of the cases. Among the uterine causes, fibroids or myomas in the uterus found (16%) cases, endometrial thickening (10%), endometrial polyp and endometriosis (6%) cases. Ovarian factors like polycystic ovary syndrome (PCOS) found (18%) cases. In 24% of women, USG tests were normal and there is no easily identifiable cause for infertility. Subfertility is not an uncommon problem in our country, major social, personal and economical burden. When pregnancy is considered such an important event in life, and considered a “socially unacceptable condition”, it can lead to a search for treatment appropriately and accurately. Aetiology of infertility are numerous and presentation also variable, sometimes confusion occurs regarding the actual diagnosis and thus delay the prompt management which may result in poorer clinical outcome. Therefore proper clinical evaluation with sonographic and other pathological findings correlation, interpretation helps to proper diagnosis, treatment and prevention as well.