Abstract: A camera control method, user equipment (UE), and a camera where the camera control method includes sending a detection request message to an Internet Protocol (IP) multimedia subsystem (IMS), where the detection request message includes a detection instruction, where the detection instruction is used to instruct, after the IMS forwards the detection request message to the camera, the camera to send a detection response message carrying device information to the UE using the IMS according to the detection instruction, receiving the detection response message returned by the IMS, and displaying corresponding parameter information and function keys according to the device information of the camera included in the detection response message.