The invention belongs to the technical field of airport surface detection radars, and particularly relates to an antenna pedestal for the airport surface detection radar. The antenna pedestal comprises an antenna support, a power box, a base and a rotating shaft, wherein a rotating support is arranged on the base; the antenna pedestal further comprises an encoder; the top end of the rotating shaftcoaxially penetrates into a small-aperture section of a mounting hole of the antenna support from bottom to top, and a hole-shaft inserting fit is formed between the rotating shaft and the mounting hole; the antenna pedestal further comprises an expansion ring; when a rotary screw of the expansion ring generates a rotary action, an inner expansion ring and an outer expansion ring generate radialexpansion due to conical fit, and interference fit is formed between the inner expansion ring and the rotating shaft and between the outer expansion ring and the mounting hole. The antenna pedestal issmall and exquisite in size, simple in structure and capable of ensuring normal operation of a radar antenna at the rotation speed of 60 revolutions per minute and even higher, and the high transmission efficiency, the operation stability and the high service life can be guaranteed synchronously.