The invention provides a forest extinguishment rocket projectile. The forest extinguishment rocket projectile mainly comprises a fuze, an extinguishment device, a solid rocket engine and an empennage, wherein the fuze comprises a proximity module transparent shade, a fuze base, a circuit board, a power supply and a safety mechanism; the extinguishment device comprises a priming port plug, a frontplugging cover, a pull rod, a center tube, a throwing ammunition body, a projectile body shell, an extinguishing agent and a rear plug; and in the extinguishment rocket projectile, the solid rocket engine is used as a power device, so the projectile body has a far flying distance and high placement concentration, and can be thrown to a fire point for extinguishment remotely, quickly and accurately. The front plugging cover and the rear plugging cover are connected together by using the pull rod, so that flyoff of the throwing ammunition body during the action can be avoided; meanwhile, the extinguishing agent can be transversely scattered in a large area. As a plurality of thin slots are processed on the projectile body shell, the projectile body is detonated and the shell can be cracked from the thin slots, and the extinguishing agent can be thrown and scattered uniformly.