Abstract: In order to investigate several common agricultural pests’phototaxis difference and to provide a theoretical basis for the development and improvement of insecticidal lamps; herein by determining the chemotactic behavior of insects indoor, we studied several common agricultural pests’relationship between phototaxis behavior at different wavelengths or light intensity of the fluorescent stimulation. The results showed that: (1) under conditions of CK light (335.09- 359.95 nm, 408.66- 432.83 nm), light trap distance of 1 m, phototaxis rate of a variety of insects was Helicoverpa armigera (Hübner)＞Prodenia litura (Fabricius)＞Leucania loreyi (Duponchel)＞Axylia putris (Linnaeus)＞Adoretus sinicus (Burmeister)＞Agrotis ypsilon (Rottemberg)＞Cnaphalocrocis medinalis (Guenée)＞Holotrichia lata (Brenske)＞Spodoptera exigua (Hübner); (2) after using 20 different wavelengths of light to trap Helicoverpa armigera (Hübner), four wavelengths of higher trapping rate were found during the trapping process; (3) under conditions of CK light and three kinds of different light intensity (1.18, 0.6, 0.24 lx), Helicoverpa armigera (Hübner), Prodenia litura (Fabricius) and Holitrichia lata (Brenske) exhibited the trend that phototaxis rate increased with light intensity enhancement; (4) Helicoverpa armigera (Hübner), Prodenia litura (Fabricius) and Holotrichia lata (Brenske) all had the highest phototaxis during the two periods: 19:30- 20:30 and 22:45- 7:00; (5) among the outdoor light trap Lepidopteran insects by the CK light, the number of males was significantly higher than females, and females carrying eggs had a higher rate; blue-violet light of fluorescent light could lure more insects, while green or yellow-green light had poor lure results.