A terminal, and a system and method for controlling and displaying an LED light bulb are provided. The terminal includes a first controller and a display module. The first controller is connected to the display module, a camera, and an LED light bulb, respectively. The first controller sends a control command to the LED light bulb to enable the LED light bulb to perform a light-bulb-adjusting operation corresponding to the control command, receive image data of the light-bulb-adjusting operation sent by the camera, and transmit the image data of the light-bulb-adjusting operation to the display module. The display module displays the image data of the light-bulb-adjusting operation and the light-adjusting information carried by the control command to a user. Thus, the terminal acquires the image data of the light-bulb-adjusting operation of the LED light bulb in real-time.