Spraying system for dust suppression vehicle and dust suppression vehicle

The utility model relates to a spraying system for a dust suppression vehicle and the dust suppression vehicle, a spraying device comprises a water supply mechanism and a spraying machine, and a generator set is connected with the spraying machine; the high-pressure water pump is in transmission connection with the generator set, a water inlet of the high-pressure water pump communicates with a water tank of the dust suppression vehicle through a water inlet pipeline, and a water outlet of the high-pressure water pump communicates with a water inlet of the spraying machine through a water outlet pipeline assembly. The water outlet pipeline assembly comprises a water collecting pipeline, a water outlet of the high-pressure water pump communicates with a water inlet of the water collecting pipeline, the water collecting pipeline comprises a first backflow port, the first backflow port communicates with a water inlet of the high-pressure water pump through a first backflow pipeline, and an electric push rod cut-