insect pest control is considered one of the important issues in the agricultural field. Chemicals insecticide is the conventional method to reduce the pest population. Despite that chemicals are not the best method; it is an effective method for pest control. The present study utilizing a non-conventional method to control some major pests (leaf miner; Liriomyza trifolii, Aphis; Aphis gossypii and spider mite; Tetranychus urticae) that are infesting crops under protected cultivation (greenhouse). Under current study, the non-conventional methods as: the microwave radiation, infrared radiation at different exposure times: 1, 2 and 3 min and ultraviolet radiation at different exposure times (1, 2, 3, 6 and 9 min.) are used. The study was carried out under laboratory conditions at the Agricultural Engineering Research Institute (AEnRI), Agricultural Research Center (ARC). The results indicated that, using microwave or using infrared radiation for 1 min. exposed time kill 100% of Liriomyza trifolii population, But Aphis gossypii produced 100% of mortality by using microwave at 3 min. exposure time. Also, using infrared radiation for 1 min. caused 100% of insect mortality. Tetranychus urticae controlled by using infrared for 1 min. or using microwave at 3 min. exposure time. Meanwhile, ultraviolet radiation has no mortality effect on the above three mentioned pests, but it has been observed that, insect behavior was changed to de-active movement or hyper active movement for Tetranychus urticae only.