A remote controller for automobile trunk is disclosed, wherein a frequency receiving host device is coupled to a device or component of an anti-burglary host device that is originally installed in an automobile by an automobile maker. The frequency receiving host device is connected by a cable to a driving motor for a trunk of the automobile and is set to receive the frequency of a user-operated remote-control transmitter originally provided by the automobile maker. The frequency receiving host device, after detecting a releasing operation initiated by a signal transmitted from the remote-control transmitter to the anti-burglary host device to release an anti-burglary system of the automobile, receives a continuously transmitted signal from the remote-control transmitter, which signal extends for a predetermined period of time, and consequently the frequency receiving host device issues a control signal through the cable to the trunk driving motor to open the trunk lid. With such an arrangement, even a low-end automobile can have the same advanced remote-control feature as that incorporated in a high-end automobile.
