The invention discloses a nine-channel spatial spectrum estimation super-resolution monitoring direction-finding fixed station system, which is characterized by comprising a small biconical omnibearing monitoring antenna, a nine-unit direction-finding antenna array, two functional amplifiers, a monopole monitoring antenna, a nine-channel signal switching module, a filtering combiner, an amplifier module, a nine-channel receiver, a monitoring direct-finding controller, a digital signal processor (DSP) processing module, an embedded industrial personal computer, a global positioning system (GPS) antenna, a GPS module, a 3rd generation (3G) antenna, a 3G route, a power supply module, a continuous power supply module, a remote control unit and a switchboard which are shown in a figure in the specifications. The system has the advantage that: resolution and interception of a same-frequency multi-point transmitted signal can be solved. Coherent signals caused by a plurality of paths can be distinguished under a certain condition and can be widely applied to radio direction finding in a complex electromagnetic environment. A spatial spectrum system has high multipath effect resistance, high sensitivity, high monitoring and direction finding speeds and high accuracy, and can be used for quickly capturing various digital frequency hopping, frequency spreading and frequency hopping and spreading signals.