A multimedia interaction system includes: multiple electronic devices and a location detection circuit. The location detection circuit dynamically detects respective electronic device's spatial position and orientation. When an user instructs a source electronic device of the multiple electronic devices to transmit a target image object toward a selected direction, the source electronic device decides a target direction according to a location of a first candidate electronic device and the selected direction if a relative position between the first candidate electronic and the selected direction satisfies a first predetermined condition. The source electronic device transmits a target command corresponding to the target image object to a second candidate electronic device to perform corresponding multimedia interaction operations only if a relative position between the second candidate electronic and the target direction satisfies a second predetermined condition.