The current study evaluated the effect of various solvents extract from Nerium oleander leaves on developing stages in Heliothis armigera. To study the reproductive aspects of Heliothis armigera, leaf extract of Nerium oleander was prepared in chloroform and methanol solvents. After 24 and 96 hours of treatment, both chloroform and methanol extract were interrupt their life cycle and the notable changes had been observed such as increased mortality and emergence of adults were decreased.