The aim of this review is to produce an outline of numerous pharmacologic activities of quinazoline moiety. Quinazoline has become a famous topic up of two fused six-membered simple aromatic rings, a benzene ring and a pyrimidine ring because of its manifold uses. various quinazoline derivatives have been found to gives a broad spectrum of biological activities, which stimulated the research activity in this field. Quinazolines and its derivatives represent one in all the foremost active categories of compounds, that possess wide selection of biological activities like anti-bacterial, analgesic, anti-microbial, anti-inflammatory drug, anticancer, and anti-hypertensive, antifungal, anti-HIV, inhibitor, analgesic, medicament, antiprotozoal, antitumor, anti-tubercular activities. This review is an effort to magnify the immense potentiality of this ring system. This study may accelerate the designing process to come up with a lot of range of therapeutically viable clinical candidates.