Efuse unit and layout structure thereof

The invention provides an Efuse unit layout structure. The Efuse unit layout structure comprises an Efuse cathode structure and an anode structure connected with the Efuse cathode structure through a fuse structure. The blocking heat dissipation structures are located on the two sides of the fuse structure; wherein the number of the heat dissipation blocking structure on each side of the fuse structure is at least one; the layout shape of the heat dissipation blocking structure is a strip-shaped structure, and the heat dissipation blocking structure is parallel to the fuse structure in the length direction of the heat dissipation blocking structure. The blocking heat dissipation structure comprises a blocking layer structure and a metal layer structure located above the blocking layer structure, and the blocking layer structure is connected with the metal layer structure through a through hole; the barrier layer structure is used for blocking sputtering generated during Efuse explosion; the metal layer struct