[Objectives]  To determine the effect of board color on the relative numbers of the fruit fly Bactrocera dorsalis, and the natural enemies of insect pests, trapped on sticky boards. [Methods]  Methyl eugenol in five colors, yellow, blue, green, red and purple, was added to ordinary sticky boards and fruit fly sticky boards, which were then hung 1.5 m from the ground in a pear orchard. Trapped insects were eluted for identification, classification and quantitative statistics, and the relative numbers of B. dorsalis and natural enemies captured on different colored sticky boards was compared. [Results]  Significantly more B. dorsalis were caught by fruit fly sticky boards than that by ordinary sticky boards. Yellow and green fruit fly sticky boards trapped (97.83 ± 9.59) and (50.50 ± 4.32) B. dorsalis per week, respectively, significantly more than blue, red and purple sticky boards. Yellow fruit fly sticky boards trapped 7 natural enemies and 9 pests, whereas green fruit fly sticky boards trapped 5 natural enemies and 9 pests. The benefit-to-harm ratio of all 5 colors of fruit fly sticky boards was therefore relatively small. Diptera, Coleoptera and Hemiptera were the main insect orders trapped. The main natural enemies trapped included members of the Neuroptera, Coleoptera and Hymenoptera, none of which are parasites of B. dorsalis. Earwigs were the only predatory natural enemy trapped but only very few of these were caught. [Conclusion]  Yellow and green fruit fly sticky boards were more effective than blue, red or purple, boards for trapping B. dorsalis, and caught fewer beneficial insects. These traps should be deployed when B. dorsalis is present in orchards.