Tool for three-point bending test

The invention discloses a tool for a three-point bending test, and the tool comprises a fixed seat, a plurality of groups of supporting assemblies are arranged on the fixed seat at intervals, each group of supporting assemblies is in lap joint with a to-be-tested piece, a moving seat is arranged above the fixed seat in a lifting manner, and a plurality of pressing pieces are arranged on the moving seat at intervals. The pressing pieces and the supporting assemblies are arranged in a one-to-one correspondence mode, and the moving seat moves to enable the pressing pieces to press the middle of the to-be-tested piece so as to test the to-be-tested piece. According to the tool for the three-point bending test, the multiple supporting assemblies are arranged on the fixed base at intervals, the to-be-tested piece is in lap joint with each supporting assembly, the movable base is arranged above the fixed base in a lifting mode, the multiple pressing pieces are arranged on the movable base at intervals, and the movab