The occurrence and spatial distribution of Erythroneura apicalis (Nawa) populations infesting grapes in Turpan area, Xinjiang were investigated and analyzed by using Taylor's Power Law and Iwao's regression method. The results showed that the E. apicalis could complete 4 generations every year in Turfan aera. The first peak appeared during the second ten days of May and the rest generations overlapped with each other. The spatial distribution of its populations linked with the variation of temperature. During the spring with temperature variation between 20℃ and 30℃, its populations tended to colonize the middle and upper part of pergola of grape. With the temperature rising during summer, the population transferred to the middle and lower position of pergola, and got through the extreme temperature with such habits as hiding below the veil and staying at the cool and humid surface of soil, etc. The analysis of Iwao's patchiness and Taylor's law showed that the spatial pattern of E. apicalis within its developmental period was aggregated. It was also confirmed that E. apicalis had the characteristics of regular aggregation and dispersion incidence in its population dynamics.