A method and apparatus for updating a User Equipment (UE) policy and a computer storage medium are provided. The method includes that: UE receives a first UE policy and/or first indication information from a network device; and the UE executes an operation of updating an association between an application data stream and a Protocol Data Unit (PDU) session and/or an operation of updating Wireless Local Area Network (WLAN) access selection and/or an operation of updating network slice information and/or an operation of updating a PDU session based on the first UE policy and/or the first indication information.