In order to find out the main types and occurrence bore fruit pests of Prunus humilis Bunge in local region, traps to lure adult insects were hanged one week after flowering. Pesticides were sprayed above ground when the first adult insect trapped, and then spraying was applied in interval of 20 days until one month before the fruit ripening. The results showed that Grapholitha molesta and Grapholitha funebrana were two main fruit borers on Prunus humilis Bunge. Grapholitha molesta had three eclosion peaks, in which the first and the third peak lasted for a long time, and the second peak was higher but shorter duration. The first and the third eclosion peak of Grapholitha funebrana were higher but shorter duration, and the second peak was lower but longer duration. The prevention effects of spraying 3000 times of 2.5% Cyhalothrin EC or 2000 times of 20% Fenvalerate EC were the best, and spraying 1000 times of 40% Omethoate EC was the second.