The control principle of the pneumatic system and the two-component paint supply for the spraying robot are described.Aiming at problems such as paint repainting entering the valve terminal to control the air passage,varnish tarnishing,and paint pipeline bursting during the use of a painting robot in an automobile factory,the field experience,proposes improvement methods,formulates effective standards and improvement measures for the problems that occur from the source to the end are summarized.Therefore,the problem of long and high frequency shutdown of the spraying robot during use can be reduced.