A value-added service deployment method, a network device, and a value-added service device, which relates to the field of network communications. The network device receives a first registration request message sent by the value-added service device, where the first registration request message includes an Internet Protocol (IP) address of the value-added service device, where the network device acquires virtual system information of a virtual system generated by the value-added service device for the network device according to the first registration request message, the network device allocates a virtual slot and a slot number to the virtual system and sends the slot number to the virtual system according to the virtual system information, and the network device manages the virtual system as a value-added service board of the network device.