The invention discloses a counter system for all-weather automatic detection and interference of unmanned aerial vehicles, comprising a main control computer, a pan-tilt for installing various components, a signal processing module, a control module, a broadband power amplifier, an antenna array and an interference transmission The antenna, the PTZ includes a base, an upper tray, a fork arm and an antenna placement shaft. The interior of the base is equipped with a vertical stepping motor, a radio frequency slip ring, a stepping motor driver, a stepping motor controller, a network switch and a serial port server. The all-weather automatic detection and interference countermeasure system for unmanned aerial vehicles of the present invention can determine whether there are unmanned aerial vehicles in the surrounding airspace by extracting and analyzing the electromagnetic wave signals sent by the unmanned aerial vehicle when it communicates with the remote controller. exist. And signal monitoring mainly relies on signal detection and analysis modules, without manual intervention and participation; it is no longer limited by natural conditions such as night, rain, snow, overcast, haze, etc., so it can achieve all-weather duty.