Recently, thepear psylla, Cacopsyllapyricola (Förster) (Hemiptera : Psyllidae) and the olive scale insect, Parlatoria oleae(Colvee) (Hemiptera: Diaspididae) are the most important pests on pear trees indifferent locations in Egypt. The main purpose of this investigation is toinvestigate the effect of some different natural control compounds on the pear psylla, the olive scale and theirnatural enemies on pear trees inIsmailia and Gharbia Governorates throughout May and October 2013-2014,respectively. In the first season results indicatedthat, ,the four compounds (Jojoba oil, Peacilomycesfumosoroseus, Azadrachtin and Verticellium lecanii) gave moderatetoxic effect against C. pyricola population nymphs and its predator, Orius laevigatus (Fieber) (Hemiptera: Anthocoridae). Mineral oil and Sulphur compounds gave 78.6% and 74.9 % and 70.3 % and66.9 %of C. pyricola populations nymphs andits predator, O. laevigatus, respectively. On the other hand, Malathion gave high efficacy against nymphs of C. pyricola (88.0%) and its predator, O. laevigatus (82.5%). In the secondseason, the results indicated the sametrend to which obtained in the first year. While, in the first season, for P. oleaepopulations and its parasitoid, Aphytis lingnanensis Compere (Hymenoptera:Aphelinidae) the results indicated that, the above mentionedgave moderate toxic effect . Mineral oil and Sulphur compounds gave 77.7 %& 73.9% and 70.2 % and 66.2 %% of P.oleae populations and its parasitoid, A. lingnanensis, respectively. While, Malathion gave high efficacy against P.oleae populations (87.0%) andits parasitoid, A.lingnanensis (82.9%) . In the secondseason, the results indicated that thesame trend to the first year. It could concludedthat treatments with Jojoba oil , P. fumosoroseus,Azadrachtin and V. lecaniigave moderate effect of the pear psyllaand the olive scale and their natural enemies (parasitoid and predator), whencomparing with Mineral oil, Sulphur and Malathion. This conclusion will be help in integratedpest management program of the two pests infested pear in Gharbia and Ismailia, Governorates.