Abstract  [Aim]  To clarify how different types of peach orchard affect the parasitism and mortality of Grapholita molesta eggs, and determine whether there is higher egg mortality in those with more complex habitats. [Methods]  The parasitism rate, predation rate and natural mortality rate of G. molesta eggs were systematically investigated in four different types of peach orchards (natural and mixed planting, clean tillage and mixed planting, relay cropping and single planting and clean tillage and single planting) between April and September. [Results]  The average mortality rate of eggs in the four different orchards was 45.4%, 25.3%, 28.6% and 34.6%, respectively, and the natural mortality rate was 12.0%, 15.3%, 14.7% and 16.1 %, respectively. There was no significant difference among the four orchards in either of these variables. During the peach growing season, the mean parasitism rate in the four orchards was 8.0%, 1.1%, 1.5% and 2.7%, respectively, and the average predation rate was 18.6%, 4.6%, 6.3% and 2.4%, respectively. The parasitism rate and predation rate in natural and mixed planted orchards were both significantly higher than those in the other three orchard types. During the harvest season, the average parasitism rate in the four types of orchard was 5.5%, 6.9%, 15.4% and 26.8%, respectively, and the average predation rate was 39.2%, 10.6%, 8.7% and 14.1%, respectively. The predation rate of eggs in natural and mixed-planted orchards was significantly higher than in the other three orchards types. The percentage of eggs parasitized by Trichogramma dendrolimi and Trichogramma pintoi was 50.8% and 49.2%, respectively. [Conclusion]  Complex orchard habitats can effectively stabilize the parasitism rate and improve the predation rate of G. molesta eggs. T. dendrolimi and T. pintoi appear to be the dominant egg parasitoids of fruit-boring insects in peach orchards.