An investigation was conducted on control of melon flies,Myopardalis pardalino.Cucumis melo var.inodorous is an economic vegetable species widely planted in northeast of IRAN (Provinces of Khorasan and Semnan) and thepesticides application for control of the pests is a major problem.In regard to this,the main aim of this research was to study the influence of intercropping of Cucumis melo var.inodorous,as main crop and Thymus vulgaris and Mentha piperita,as intercrop plants on pest population and fruits damaged with the pest.