The invention discloses a signal receiving device comprising an installation disc and a signal receiver installed on the installation disc, wherein two fixing bodies are symmetrically arranged on the bottom of the signal receiver on left and right sides, a jack is formed in the bottom of each fixing body, locking openings are symmetrically arranged in left and right end parts of the top of the jack, a chassis is fixedly installed on the bottom of the installation disc, a loading groove with a downward open end is formed in the chassis, a metal block is installed in the loading groove, hypotenuse parts are arranged on left and right ends of the installation disc, a driving cavity is arranged in the installation disc, the signal receiving device has a simple structure and a low production cost, the signal receiver is convenient to install and detach, the signal receiver has good installation stability, the signal receiver can be set to lift and inclined very conveniently, the operation of the whole device is safe and reliable, and the signal receiving efficacy satisfies the use demand of the existing signal receiver.