Abstract: Habitat management may enhance pest control by the carabids.The dispersal patterns of carabids were monitored by setting up pitfall traps in maize field and pastures.The results indicated that a large number of carabids moved into maize fields from adjacent alfalfa(Medicago sativa)and rumexk (Rumex paientia x R.tianschanicus),which were 1.6 and 2.4 times of these out of the maize field,respectively. By contrast,numbers of carabids moving from adjacent weeds to crop fields were similar to those from crop fields to adjacent weeds.It is suggested that field margins such as ridge and sloping fields may play a important role in protecting carabids,and the pasture plants may be planted adjacent to crops to increase the population size of natural enemies in crop fields.