The invention provides a communication interval configuration method and a communication interval configuration device. The method comprises steps: a base station receives an interface communication interval request message sent by a terminal, wherein the interface is an interface between terminals; the base station sends an interface communication interval configuration message to the terminal according to the interface communication interval request message, and the terminal configures a communication interval for the interface according to the interface communication interval configuration message and performs a communication operation on the basis of the configured communication interval. By adopting the above technical scheme, the problems that as no technical scheme defines a PC5 communication interval design in a related technology, PC5 and Uu operations can not be supported at the same time are solved, and effects that the terminal can support operations with other terminals and the base station at the same time are further achieved.