Ommastrephes bartramii is one of the most important fishing targets in the Chinese distant-water fishery. Understanding the spatial distribution characteristics of marine resource will provide a basis for sustainable exploiting and utilizing of resources. In this paper, the production data of Ommastrephes bartramii in the waters of 150°-160°E and 38°-48°N in the North Pacific from August to October in 2011 was used and the capture by one fishing vessel per day (CPUE) is considered as the abundance index. the geostatistics methods were used to analyze the spatial distribution characteristics of CPUE and to explore the spatial variability of abundance index of Ommastrephes bartramii under the seven spatial scales, i.e. latitudes and longitudes for 10'×10', 20'×20', 30'×30', 40'×40', 50'×50', 60'×60' and 70'×70. The results show that the best spatial autocorrelation degree of heterogeneity on CPUE is described by the exponential model during August to October. Under the small spatial scales(10'×10', 20'×20' and 30'×30' latitudes and longitudes), the spatial autocorrelation heterogeneity shows the middle level and above, while under the medium scales(40'×40', 50'×50', 60'×60' and 70'×70' latitudes and longitudes), the spatial autocorrelation heterogeneity shows the low level. The spatial structure of O. bartramii shows anisotropic, the monthly angle directions during August to September are northwest-southeast and northeast-southwest respectively, while it has great change of angle direction in October which may be affected by the marine environment and the beginning of southwards-migration of Ommastrephes bartramii owing to maturation. It is concluded that the suitable scales for studying the spatial heterogeneity of CPUE are small scales and 30'×30' shows the most stable one.