Abstract: 【Objective】 To clarify the spatial distribution patterns and sampling techniques of Grapholitha funebrana Treitscheke larvae in orchards, so as to provide theoretical basis for scientific control, investigation and sampling of the insect. 【Methods】 The spatial distribution pattern and sampling technique were studied by means of aggregation index method, Iwao regression analysis, Taylor's power law and Iwao optimal sampling model. 【Results】 The spatial distribution pattern of larva was related to population density. With the increase of population density, the spatial distribution of larva changed from uniform distribution to aggregation distribution. The distribution of larva was uniform distribution when the rate of caries was 0.22%, and the distribution of larva was aggregatived when the rate of caries was 1.67%-10.10%. The causes of aggregation were caused by their living habits and environmental conditions. The optimum sampling number under different population densities and allowable errors was determined. 【Conclusion】 With the increase of population density, the spatial distribution of larva larvae changes from uniform distribution to aggregation distribution. For the orchards with aggregation distribution (fruit decay rate >1.67%), it is important to control the plant or the parts with serious damage, which is the key measure to effectively control the spread and damage of G. funebrana.