Abstract  [Aim]  To provide a scientific basis for improving light-trapping technology for Lobesia botrana. [Methods] Monochromatic lights of different wavelengths were screened, and the wavelength to which Spodoptera litura were most sensitive was selected. [Results]  L. botrana was most sensitive to 390 nm monochromatic light. The highest total number of insects (801 ind.), and highest average number (12.14 ind.), were trapped using 390 nm monochromatic light traps, followed by 420 nm traps, but the difference between these wavelengths was not significant (P>0.05). In comparison, the total number trapped using pheromone traps was 573 (average 12.14 ind.), which was significantly less than were trapped using the above two kinds of monochromatic light (P < 0.05). [Conclusion]  Monochromatic light of 390 nm are effective for trapping L. botrana.