Automatic spraying system capable of rapidly reducing dust

The utility model discloses a rapid dust fall automatic spraying system, which comprises a main control module, a data acquisition module, a photovoltaic power supply system and an executive component, the executive component comprises spraying devices arranged on a roadside guardrail at intervals, spraying pipelines connected with the spraying devices in sequence, a water pump connected with the spraying pipelines and a reservoir; the spraying device is provided with a data acquisition module, the data acquisition module comprises a temperature and humidity sensor and a raised dust density detection sensor and is connected with the digital-to-analog conversion module of the main control module through Bluetooth or a wireless network, the reservoir is provided with a rainwater collection device, and the reservoir is internally provided with a water level monitoring module and an alarm module. The main control module receives information fed back by the data acquisition module and controls the execution elemen