The fall armyworm, Spodoptera frugiperda (J.E.Smith, 1979), is one of themost important pests of maize in Vietnam as well as the greater Americas,causing up to 35% production losses when defoliation occurs nearflowering or even complete destruction of plants. The use of artificial dietsto mass-reared insect stock under laboratory conditions for Biologicalcontrol of this pest is necessary. In this study, the comparison was madebetween four different diets and the control-maize leaves, which wasnatural food on the growth and development of S. frugiperda larvae andgenerated information on development time, larval and pupation survival,weight,lengthoflarval,pupa,reproduction(fecundity)andadultlongevity. In four artificial diets and maize leaves, The Diet 2 withingredients inside consisted of white kidney beans (150 g), wheat germflour (150 g), Methyl p-hydroxyl benzoate (5.0 g), Sucrose (28.0 g), Vitacap(6.0 g), Vitamin 3B (3.5 g),L-cysteine (1.2 g), Chloramphenicol (0.15 g),Ascorbicacid(3.0g),Bakingyeast(60g)CuSO4.5H2O(0.3g)MgSO4.7H2O (0.5 g) NaCl (0.5 g), Agar (20 g) and 700 ml distilled watershowed the development from larval to pupal was 29.2 days, sex ratio(1:1.09), adult emergence (100 %), survival larval (95.66%), survivalpupal (91.33%) and fecundity (1,618.8 eggs) as compared to other diets.Diet 2 can also be used in appropriate quantities to increase the numberof female moth population and sustain mass rearing for research biologicalcontrol