The invention provides a beaver incisor structure-imitated anti-corrosion branch crushing tool. The anti-corrosion branch crushing tool consists of a bionic blade and positioning bolts, wherein the bionic blade consists of a bionic cutting edge and a tool holder; U-shaped positioning holes 5 are formed in the tool holder 4; each positioning bolt 2 is arranged in the corresponding U-shaped positioning hole 5 in manner of being perpendicular to the tool holder 4, thereby realizing fixed connection between the bionic blade 1 and a body of a crusher; the profile curve of the upper cutting surfaceof the bionic cutting edge 3 of the bionic blade 1 is a beaver incisor structure-imitated curve, and the curvilinear equation is as shown as follows: f(x)=a1x<2>+a0x; wherein the value range of a1 is-0.012 to -0.008, the value range of a0 is 0.55 to 0.70, and the value range of x is 0mm to 30mm; an MoS2 microballoon structure covers the upper surface of the bionic cutting edge; and nanopillars are distributed on the surface of the MoS2 in the radial direction. As a beaver incisor structure is imitated by the tool provided by the invention, during branch crushing, working resistance of the branch crushing tool is reduced, and crushing efficiency is increased.