Abstract: To explore the trapping effects of the insecticidal lamps with different spectrum on pests in apple orchard, and evaluate the effects on insect population structures, the authors carried out a trapping pests experiment in an apple orchard by insecticidal lamps with 3 kinds of spectrum from July to August in 2015 in Tianshui. The results showed that: the insecticidal quantities and insecticidal spectrum of insecticidal lamps with multi- spectrum and LED multi- spectrum were much better than that of the insecticidal lamp with frequency vibration type; the revised natural enemies and pests ratio of the insecticidal lamps with frequency vibration type, multi- spectrum and LED multi- spectrum was 1:16.39, 1:28.57, 1:21.80, respectively; the trapping effect of the insecticidal lamps with LED multi-spectrum on Coleoptera, Homoptera, Hemiptera and Diptera was better than that of the other lamps; parameter analysis of community diversity showed that: the Shannon- wiener index of trapping insect with the 3 kinds of insecticidal lamps was 3.9231, 3.6982 and 3.8134; the evenness index was 0.7082, 0.6399 and 0.6770. The insecticidal lamps with frequency vibration type, multi-spectrum and LED multi-spectrum all show a good control effect on pest in apple orchard, have a little trapping effect on natural enemies and neutral insects. This study provides a basis for scientific use of the solar insecticidal lamp.