The facial artery musculomucosal flap (FAMM) is usually used in reconstruction of defects in oral cavity, most frequent being the mouth floor. This flap has many advantages from its surgical procedure, its great reliability, its mucous tissue origin, its usable surface, its large axis of rotation and the little of after-effects of the donor site. The hard palate defects with bucconasal communication can raise difficulties of reconstruction. We show, by a case report, the many advantages of FAMM flap in these reconstructions.