Embodiments of the present application provide a communication method, a terminal device and a network device. The method includes: starting, by a terminal device, a preconfigured timer; and monitoring, by the terminal device, resource preemption indication information transmitted by a network device in a preconfigured target frequency monitoring area within a duration of the timer, where the resource preemption indication information is used to indicate a resource that is preempted by other traffic in an evolved mobile broadband traffic (eMBB) resource, the eMBB resource is a time-frequency resource used to schedule eMBB traffic, the other traffic is different from the eMBB traffic. The embodiments of the present application can inform a terminal device of a preempted eMBB resource flexibly within a duration of a timer by using the resource preemption indication information.