Backpack gasoline mist and powder sprayer

The invention discloses a backpack gasoline mist and powder sprayer and relates to the technical field of garden plant protection machinery. The backpack gasoline mist and powder sprayer comprises a material barrel, a material barrel connecting seat, a control switch and a back frame. The material barrel is of a rotary conversion structure, and a spraying material is switched between a liquid spraying material and a particle spraying material before and after conversion; an opening located on one side is formed in the bottom of the material barrel, and the liquid spraying material and the particle spraying material are controllably output from the opening; a buckle is arranged on the material barrel connecting seat and used for connecting the material barrel; the control switch is located on a spraying material output pipe beside the hand of an operator, an accelerator switch, a flameout switch, a particle spraying material control switch and a liquid spraying material control switch are integrated on the con