An interactive electronic apparatus and an interactive method thereof are provided. The interactive electronic apparatus includes a main device and a casing. The main device is installed in a containing space of the casing. After the main device establishes a connection with the casing, the casing sends at least one of a first distance between the casing and an object to be sensed by a first distance sensor and a second distance between a bottom portion of the casing and a plane detected by a second distance sensor to the main device. The main device determines an interactive state of interaction with the interactive electronic apparatus based on at least one of a movement information sensed by a gravity sensor, the first distance and the second distance, and sends an interactive signal corresponding to the interactive state.