Imitative insulator pollution-accumulating box

The utility model provides an imitative insulator pollution-accumulating box. The imitative insulator pollution-accumulating box comprises a housing, a pollution-accumulating plate and a fixing device, wherein the housing comprises a top plate, a bottom plate and supports, wherein the top plate is fixed with the bottom plate through the supports arranged at the four vertexes; the upper surface of the pollution-accumulating plate is convex-circular; the pollution-accumulating plate is fixed inside the housing; the housing is fixed on a tower through the fixing device. The imitative insulator pollution-accumulating box disclosed by the utility model is relatively low in cost, relatively small in size and relatively light in weight, can be used for substituting a sampling insulator for pollution grade detection on an overhead transmission line, so as to effectively reduce the labor intensity and the cost of the insulator pollution grade detection.