The utility model relates to a high overload resistant long-range fire-extinguishing bullet, belonging to the field of fire-extinguishing bullets. The long-range fire-extinguishing bullet disclosed by the utility model comprises a fire-extinguishing bullet shell, a fire extinguishing agent, an additive and a coating layer, wherein the additive is expanded perlite of which the particle size is not more than 5mm; the coating layer is made of an elastic soft material; and the coating layer is arranged on an inner wall of a fire extinguishing agent filling cavity in the fire-extinguishing bullet shell, the additive is mixed with the fire extinguishing agent and is fed in the coating layer in the fire-extinguishing bullet shell, and the addition amount of the additive does not exceed 1/30 of the mass of the fire-extinguishing agent. According to the long-range fire-extinguishing bullet disclosed by the utility model, due to dual effects of the additive and the coating layer, the extrusion effect of the long-range fire-extinguishing bullet shell under high overload on the fire-extinguishing agent is buffered, a phenomenon that the fire-extinguishing agent is extruded into blocks is avoided, and a fire-extinguishing effect of long-rang flying of the fire-extinguishing bullet is achieved.