Insect pests of stored products constitute a worldwide problem because they reduce the quantity and quality of stored products. In this study we investigated the interactions between different factors that affect the growth of two successive generations of the southern cowpea weevils, Callosobruchus muculatus (Fab.) (Bruchidae: Coleoptera) reared on mung bean, to find a best conditions to control this pest. These factors include cyromazine concentration, treatment method and breading temperature. Our results showed a variable effect in the reproductive rate of C.