A packet forwarding method, apparatus, and system, and a computer-readable storage medium are disclosed, and pertain to the field of communication technologies. After receiving a packet sent by a second device, a first device determines a target service node based on indication information and an application service identifier that are in the packet, where a service capability of the target service node matches the indication information, and a target application service corresponding to the application service identifier is deployed in the target service node. Then, the first device sends the packet to the target service node. The indication information is carried in the packet sent by the device, so that a forwarding device can send the packet to a service node whose service capability matches the indication information. In this way, differentiated application services are provided for devices of different levels, and flexibility of task scheduling is high.