The article presents the types of aphids that develop and cause damage to maize and sunflower crops in the conditions of Karakalpakstan, the developing type of each species, the period of coming to the field, the damage it causes, and the criterion of economic damage. The biological effectiveness of the natural predator, eaters, and golden-eyed entomophagus cultivated in biolaboratories was determined in controlling aphids, and the technology of using this predator was studied.