The present invention relates to a fuse composite insulator detection tool, comprising: a detection support, wherein the detection support comprises a support which is vertically arranged, and a top base and a bottom base which are arranged at the same side of the support and are horizontally distributed in a vertical direction, the bottom base is fixedly connected with the support, a height adjusting mechanism is provided between the top base and the support; an adjusting mechanism, wherein the adjusting mechanism consists of two adjusting block groups which are arranged symmetrically and distributed at two sides of the upper end of the bottom base, each adjusting block group consists of a plurality of adjusting blocks, and a gap in which a support of a fuse can be embedded is provided between two adjacent adjusting blocks; and a detection mechanism which comprises detection cylinders and detection rods. The fuse composite insulator detection tool has the advantages that: through the arrangement of three groups of detection cylinders and detection rods, during detection, the fuse composite insulator detection tool can detect whether circle centers of three holes of a product are located on the same plane in one time, and also can detect whether the angle of a top end hole satisfies the requirement at the same time.