Abstract: Brown’s tumour is a special rare localized giant cell related tumour which arises as a consequence of the raised parathyroid hormone. Apart from other bones in body, in facial aspect the mandible is the most predominant site in the compared to maxillary involvement. Brown’s tumour, usually manifest as osteolytic activity and gross distortion in the bones including maxillofacial bone,this suggests the necessity of timely diagnosis and timelyaccurate management. Here we report afemale patient of 37 years presented with a soft tissue swelling in the gum of rightside of the mandible along with hard tissue involvement of left side as the foremost appearance of main hyperparathyroidism, because of underlying parathyroid adenoma.