The utility model discloses a handheld multipurpose forest protection emitter that comprises an emission tube and a safety firing machine with a handle and a trigger, wherein the safety firing machine is connected with the handle as a whole, arranged near the middle part of the emission tube and internally provided with a mechanical safety mechanism that mechanically limits the movement of the trigger and a circuit safety device avoiding failure of ignition; and the double-safety firing machine is electrically connected with a power supply, pushes a safety pin and couples a micro switch through a protuberance of the trigger, and simultaneously conducts the micro switch of the power supply by the stroke and coupling of a plate spring to subsequently form a firing loop. The protection emitter is simple in structure, reliable in use and convenient to carry, and consists of only two parts of the emission tube and the double-safety firing machine in whole. The protection emitter solves the problems that the existing forest fire-extinguishing equipment is complicated and heavy in structure, not convenient to carry, poor in safety and motility, low in efficiency and high in the cost of extinguishing fire by a jet, and is especially applicable to the protection against forest fire and insect damage, forest seeding, and the high-efficiency fire-fighting of cities.