Seven macadamia species,O.C,H2,A4,A16,816,344 and 333,were selected to investigate the population and damage of thrips.This study investigated the species and quantity of thrips at flowering stage,early fruiting stage,fruit ex-pansion stage and nutrient accumulation stage.At the same time,the damage rate of the fruit before harvest was investigat-ed.The results showed that at least 7 species of thrips could harm macadamia.The thrips are mainly adults at flowering stage and nymphs at fruit stage.Thrips coloratus is the dominant species.In the comprehensive evaluation of the occur-rence degree of thrips,344 was the lowest,followed by H2 and A16,816 was the highest,followed by 333.