The invention discloses a chlorempenthrin smoke generator. The chlorempenthrin smoke generator is characterized by comprising, by weight, 0.1-70% of chlorempenthrin and the balance agriculturally acceptable heat supply agents. The heat supply agents comprise agriculturally acceptable fuel, oxidizing agents and auxiliaries, the agriculturally acceptable fuel is used for preparing smoke generators, and the oxidizing agents comprise one or a plurality of types of potassium chlorate, ammonium nitrate, potassium nitrate, sodium nitrate, sodium nitrite, potassium perchlorate and potassium permanganate. The fuel comprises one or a plurality of types of corncob, cow dung powder, straw, bagasse, wood powder, charcoal, white sugar, starch, sulfur, ammonium thiocyanate and urotropine. The auxiliaries comprise one or a plurality of types of smoke agents, combustion guide agents, flame retardant chemicals, cooling agents, weighting agents, adhesive, moisture-proof agents and stabilizers. The chlorempenthrin smoke generator has the advantages that the activity of agents of the chlorempenthrin smoke generator can be enhanced, the adhesive, permeation and dissolving capacity of the chlorempenthrin smoke generator can be improved, and comprehensive biological effectiveness of contact killing, respiration inhibition and the like of the chlorempenthrin smoke generator can be sufficiently played; the chlorempenthrin smoke generator can be dissolved fast and is low in residual quantity and little in environmental pollution; the chlorempenthrin smoke generator can be applied without optional equipment or apparatuses, accordingly, work and labor can be saved, energy can be effectively saved, and the chemical use costs can be reduced for farmers.