Air suction type grassland locust trapping machine

The utility model belongs to the technical field of disease and pest control, and particularly relates to an air suction type grassland locust trapping machine which comprises a back box, an air suction fan and a power source are fixedly connected to the upper end and the lower end of one side of the back box respectively, the air suction fan is communicated with the interior of the back box and electrically connected with the power source, and rotating grooves are formed in the two sides of the upper end of the back box. An insect fumigating pipe is arranged in the spiral groove, a second spiral cylinder is fixedly connected to the outer portion of the insect fumigating pipe and is in spiral connection with the spiral groove, a hose is fixedly connected to the upper end of one side of theback box, a straight pipe is fixedly connected to one side of the hose, a plurality of first clamping blocks are integrally formed at a pipe opening of the straight pipe, and an insect catching coveris installed on one side