The embodiment of the invention provides a network
slice selection method, device and
network architecture, and the technical problem that a network slice cannot be flexibly selected in the prior artis solved. The method includes the steps of using a
slice selection control function to acquire one or more items of a
slice selection strategy, user subscription information, network slice selectionassistance parameters and the user context; the slice selection
control function determining network slice selection information according to the one or more items of the slice
selection strategy, user subscription information, network slice selection assistance parameters and the user context, sending the determined network slice selection information to the slice routing function, so as to enable the
slicing routing function to execute signaling or data routing (signaling is 5G control signaling), and the data is sent by a user, such as internet surfing data,
internet of things data and thelike ). The technical problem that a network slice cannot be flexibly selected in the prior art can be solved.