A blowing-suction machine includes an engine, a volute, a vent assembly and a vacuum pipe. The engine is installed at an upper end of the volute； the vent assembly is installed at a front end of the volute； an output shaft of the engine in the volute is coupled to a vane； a first shaft of a self-propelled device is coupled to a lower end of the first shaft； both ends of a second shaft of the self-propelled device are coupled to a wheel self-propelled device and a rolling-sweeping-combing device respectively； and the vacuum pipe has an end coupled to the vent assembly and the other end disposed in front of a garbage deposit box. This disclosure features a simple structure and a clever design and provides the self-propelled, automatic sweeping, automatic grass combing, and garbage crushing functions to improve the blowing-suction rate significantly and provide a convenient use.
