The utility model discloses an insecticidal box for forestry. The device comprises a box body, the middle end of the top of the inner cavity of the box body is fixedly connected with a lamp pole; A storage battery is fixedly connected to the top end of the inner cavity of the box body and located on the left side of the lamp pole, a 4G communication module is fixedly connected to the top end of the inner cavity of the box body and located on the left side of the storage battery, and an inverter is fixedly connected to the top end of the inner cavity of the box body and located on the right side of the lamp pole. The insect killing liquid containing groove is formed in the middle end of the bottom of the inner cavity of the box body. Heating plate, the fan, the pipeline and the air outlet act; the requirements of people on heating volatilization of the deinsectization liquid and accelerating outward diffusion of the deinsectization liquid can be met; meanwhile, under the action of the photoresistor, the lamp pole and the insect inducing lamp, the attraction requirement of people for mosquitoes at night can be met, the insect killing effect of the device is effectively improved, andthe problems that an existing insect killing device is not ideal in using effect, and the insect killing efficiency is reduced are solved.