The invention belongs to the technical field of paint processing equipment, and particularly relates to a paint filler adding structure. The paint filler adding structure comprises a stirrer main body and a stirring rod, wherein a rotating ring unit which is used for connecting the stirring rod and controlling the opening and closing of a filler adding structure for filler adding is arranged inside the stirrer main body; the filler adding structure comprises a filler box, filler box fixing posts, a filler box adding opening and a filler box feeding opening; a filler adding regulating unit is arranged on the filter box; a feeding buffer pressure reduction unit is arranged inside the filter box. The paint filler adding structure has the advantages that the paint can be effectively stirred; meanwhile, the addition of fillers in the paint is completed; the structure is simple and effective; the stirring operation is simple and convenient; the effect is good; the filler adding is precise; the regulation is easy; the manufacturing cost is low; the popularization is easy.