An air mouse remote controller includes a control module, an air mouse module, and a movement sensor connected to the air mouse module and configured to collect a movement trajectory of the controller. The air mouse module performs an air mouse function according to the movement trajectory and generates an air mouse control signal. The control module sends the air mouse control signal to a terminal device to control movement of a corresponding cursor. A key assembly includes a two-stage key. When detecting that the two-stage key is pressed to its first stage, the control module sends a selection instruction to the terminal device to fix the cursor at its current position, and when detecting that the two-stage key is pressed to its second stage, the control module sends an operation instruction to the terminal device to execute an operation corresponding to the position of the cursor.