Studies of the distribution and annual abundance of cockroaches were conducted at 68 restaurants in 3 regions of downtown Pusan using sticky traps from August, 1995 to October, 1999. The German cockroach, Blattella germanica, was the dominant species among four domestic species in the study areas. The population densities of German cockroaches were significantly higher in 1999 (ave. 27.8 individual/trap and 14.0/trap in median in October) than those in 1995 and 1996 in the kitchens of the restaurants. The population density of German cockroaches in 1999 was not significantly different with that of 1997. The infestation rates of German cockroaches were 78.6% in 1995; 96.4% in 1996; 96.3% in 1997; and 91.5% in 1999 at the restaurants. The infestation rates of American cockroaches (Periplaneta americana) and Smoky-brown cockroaches (P. fuliginosa) in restaurants were 20.6% and 13.2% in August, 1999, respectively, which were slightly increased in comparison with those of the past three years. The German cockroaches seemed to easily infest and/or breed in urban restaurants.