Antenna external expansion device and unmanned aerial vehicle remote controller

The utility model provides an antenna external expansion device and an unmanned aerial vehicle remote controller. The antenna external expansion device comprises an inner shell, an extension antenna, an outer shell and an outer joint, a containing cavity is formed in the inner shell and provided with a top opening, a side opening and a bottom opening. The epitaxial antenna comprises a connecting part, a clamping block and an epitaxial part which are connected in sequence, and the connecting part and the clamping block enter the accommodating cavity from the side opening; the outer shell is provided with a containing groove and a through hole, the inner shell extends into the containing groove, and the top of the extension part penetrates through the through hole and extends out of the outer shell. According to the antenna external expansion device, the antenna of the unmanned aerial vehicle remote controller can be extended to the outside of the unmanned aerial vehicle remote controller, and the antenna exter