INTERACTION METHOD AND DEVICE

An interaction method and an apparatus are provided. The method is applied to an SE disposed in a terminal. The method includes: receiving a service request from a CA (201), where the CA is an application that is installed on the terminal and that runs in an REE; determining a to-be-used TUI identifier (202); sending a TUI call instruction carrying the TUI identifier to a TEE (204), where the TUI call instruction is used to indicate the TEE to obtain a stored TUI template or TUI function module corresponding to the TUI identifier, drawing an image based on the TUI template or the TUI function module (205), and calling a TUI to display the drawn image (206); receiving response information from the TEE (207), where the response information is information entered by a user for the displayed image by using the TUI or information generated by the TEE based on interaction between the user and the image displayed by the TUI (208); and executing a corresponding service procedure based on the response information (209). In this way, service development difficulty can be reduced.