The invention relates to the field of spraying machines, and discloses a paint mixing and spraying all-in-one
machine which comprises a movable base, a material
mixing tank, a conveying pump and a spraying head, a
water storage spraying ring, a water conveying
assembly and a material mixing and stirring blade set driven by a
servo motor are additionally arranged, and the
water storage spraying ring is driven by an electric air cylinder, moves up and down in the material
mixing tank and rotates; according to the paint mixing and spraying all-in-one
machine, the interior of the tank is comprehensively scoured through densely-distributed water outlet nozzles, the cleaning effect is ensured, flexible transmission and convenient disassembly of a stirring center shaft and a
motor shaft are achieved through a transmission active connecting structure, maintenance and repair are convenient, the paint mixing and spraying all-in-one
machine further has excellent sealing performance, and mutual
pollution of water and paint is prevented; in addition, the device is compact in structure, high in integration level, convenient to move and operate on site and suitable for various working scenes, the working efficiency of mixing and spraying the paint is effectively improved, the spraying quality is guaranteed, and the equipment maintenance difficulty and cost are reduced.