After the spatial and temporal distributions of squid, Ommastrephe bartrami catch and f ishing ground in North Pacific Ocean f rom 1995 to 2001 are analyzed by use of the methods of related coef ficient and gray relationship assessment , the paper indicates that the main f ishing ground is distributed in the waters of 145bE- 148bE and 153bE- 161bE, which occupy 70- 85 percent of total catch. From the point of latitude, the f ishing ground is mainly located in the waters of 40bN- 43bN before 1999, while in the waters of 39bN- 41bN and 43bN - 45bN in 2000 and 2001 respectively. Based on the related coefficient, the fishing ground and its catch distribution in 2000 and 2001 changed greatly , especially in the waters west of 160bE and east of 170bE, but they had not changed before 1999. On the basis of gray relationship assessment , the squid resources in 1998 were in the best level, the resources in 2000, 2001 and 1996 were in the lower level, those in 1999, 1995 and 1997 were middle, which comply with actual production and ocean environment. The fall of squid resources in 2000 and 2001 may be related with the reduction of population distributed in the waters of 150bE- 160bE.