Structural principle of the machine is equipped with left and right two Tibetan bins of 28 kg each separate bins. Two different liquid materials, each from these two bins into two annular piston metering pump, start the motor, gearbox driven the two metering pump operation, each of the two liquid material tune by the advance single group the ratio at the same time conveying to the head. By the compressed air into the nozzle, the liquid material mixed in the nozzle cavity atomized liquid material mixed with the compressed air is ejected from the nozzle of the nozzle to pieces, thus completing the on-site construction of the spray foam. Adaptation: wall painting, cold spray, solar foam