Abstract: 【Objective】 To evaluate the effects of different carbohydrates on the predation and flight ability of Hippodamia variegata with a view to providing a theoretical basis for better exerting the pest control efficiency of H.variegata. 【Method】 After supplementing with different carbohydrates, the predation of H.variegata under different densities ofAphis gossypii was measured indoors, and the flight parameters of H.variegata under different treatments were measured by an indoor flying mill system. 【Results】 The predatory functional response of H.variegata adults to the fourth instar nymphs of A.gossypii after supplementing with different carbohydrates was Holling-Ⅱ. After supplementing carbohydrates nutrition, as the density of the prey gradually increases, the predation ability of H.variegata increases, and the searching ability gradually decreases. Compared with the treatment of water, the predation and searching ability of H.variegata under the treatment of glucose and sucrose have both increased, The daily maximum number of scales preyed theoretic by female H.variegata adults was 675.68 and 757.58 respectively, and The daily maximum number of scales preyed theoretic by male H.variegata adults was 374.53 and 609.76 respectively; after supplementing glucose, fructose, sucrose, maltoseand raffinose, the cumulative flight time and cumulative flight distance of H.variegata prolonged significantly; the accumulate flight time was 7.78, 6.17, 7.58, 6.80 and 6.63 h respectively, and the accumulate flight distance was 9.51, 7.70, 8.46, 6.94 and 7.12 km respectively of female H.variegata adults; the accumulate flight time was 4.69, 4.99, 5.17, 5.09 and 5.20 h respectively, and the accumulated flight distance was 4.53, 5.41, 5.28, 4.72 and 5.52 km respectively of male H.variegata adults; after supplementing glucose and maltose, the maximum flight time and flight distance of female H.variegata was significantly extended, the maximum flight time is 1.99 and 2.88 h respectively, and the maximum flight distance is 2.90 and 2.83 km respectively; supplementation of different carbohydrate nutrients had no significant effect on the flight speed of adult H.variegata. 【Conclusion】 Supplementation of glucose and sucrose can improve the predation and searching ability of H.variegata, and supplementation of glucose and maltose can improve the flight ability of H.variegata.