Mosquitoes controlled by using synthetic chemical pesticides are creating numerous problems such as non-degradable, environmental pollution, and development of drug resistance etc., in this mind search for new approach based on biological active components. In this line, methanol solvent leaves extracts of Colocasia esculenta and Wrightia tinctoria were tested against second, third, fourth instar and pupa of Aedes aegypi. The results indicate that the LC50 values of second, third, fourth instar instars and pupa of Aedes aegypi for C. esculenta was 101.17ppm, 126.02ppm, 161.60ppm and 189.28 ppm. Likewise W. tinctoria LC50 values are 126.33 ppm for II instar, 149.90 ppm for III instar, 183.97 ppm for IV instar and 228.20 ppm for pupa respectively. Among the two plants methanolic solvent leaves extracts C. esculenta expose more effective than W. tinctoria.