The endometrial polyps can be either benign or malignant. They are usual cause of heavy menstrual bleeding or post-menopausal bleeding. These polyps are composed of varying amounts of endometrial glands and stroma with spindle cells andthick-walled blood vessels. These polyps are the results of unbalanced action of estrogenic or pregestational stimulation. They are usually less than 2 cm in diameter and when size exceeds 4cm, they are called giant endometrial polyp. These are particularly important because clinically may be suspicious for endometrial adenocarcinoma or large polypoid leiomyoma. Thus, they usually cause diagnostic dilemma to clinicians. Whatever may be the aetiology, they are worrisome for patient as they cause more severe symptoms. Here by we report a case of 39 years old female with giant endometrial polyp. Nowadays in addition, there is reduction in the acute endometritis due to better medical care, however we have features of acute endometriosis in adenomyotic foci.