Expansion anchor rod

The expansion anchor rod comprises a pipe body, a supporting part, a first supporting assembly and a plugging assembly, the pipe body comprises a cavity, a grouting hole and a grout outlet, the grouting hole is formed in the pipe body and communicated with the cavity, the grout outlet is formed in the peripheral face of the pipe body and communicated with the cavity, the supporting part comprises a first protruding part, and the first protruding part is arranged on the supporting part and communicated with the cavity. The first protruding part is arranged around the pipe body and connected with the pipe body, the first protruding part comprises a first inclined face and a first connecting face, the first connecting face is connected between the first inclined face and the pipe body, the first supporting assembly comprises a first supporting piece, one end of the first supporting piece is connected with the pipe body, and the first supporting piece makes contact with the first inclined face; the distance betwe