Abstract: 【Objective】 To clarify the effects of sublethal doses of sulfoxaflor, thiacloprid and clothianidin on the reproductive development of Aphis gossypii and Acyrthosiphon gossypii in Alar cotton zone. 【Methods】 The virulence of three insecticide to Aphis gossypii and Acyrthosiphon gossypii adults were determined by leaf dipping method. The F₀ generations of Aphis gossypii and Acyrthosiphon gossypii were treated with LC₁₀ and LC₃₀. Life parameters such as longevity, fecundity and developmental duration of F₀ and F₁ generations were recorded, and the life table of population was established. 【Results】 Sublethal doses of sulfoxaflor, thiacloprid and clothianidin (LC₃₀) significantly inhibited the longevity and fecundity of Aphis gossypii and Acyrthosiphon gossypii, their longevity decreased by 27.99%-40.09% and 35.65%-50.79%, 28.19%-37.67% and 32.76%-40.27%, respectively; and their fecundity decreased by 45.01%-50.17% and 50.25%-52.24%, 21.54%-28.24% and 44.57% and 54.97%, respectively. In addition to that, the decline of Aphis gossypii was greater than that of Acyrthosiphon gossypii. The analysis of life table parameters showed that the net reproductive rate, mean generation and time of double population of Aphis gossypii and Acyrthosiphon gossypii were decreased or shortened, and the intrinsic increase rate and finite increase rate increased with the increase of sublethal dose of sulfoxaflor, thiacloprid and clothianidin. 【Conclusion】 Sublethal doses of sulfoxaflor, thiacloprid and clothianidin can significantly inhibit the longevity and fecundity of the F₀and F₁ generations of Aphis gossypii and Acyrthosiphon gossypii in Alar cotton zone, and the three insecticides had stronger inhibitory effect on Aphis gossypii than on Acyrthosiphon gossypii.