Method and system for switching between wireless access points (APs)

The invention discloses a method and a system for switching between wireless access points (APs), and relates to the technical field of communication. The method comprises the following steps: enabling a wireless access controller (AC) to configure a specified data type for each AP; judging whether the service data type of the under-hung terminal is consistent with the specified data type of the target AP or not; if not, comparing the signal intensity between each adjacent AP and the lower hanging terminal with a preset signal intensity threshold value; obtaining each adjacent AP of which thesignal intensity is greater than a preset signal intensity threshold value, recording the adjacent APs as signal permission adjacent APs, and comparing the specified data type of each signal permission adjacent AP with the service data type of the under-hung terminal; and if the specified data type of any signal permission adjacent AP is consistent with the service data type of the lower hanging terminal, connecting the l