The utility model provides a be used for blocking staple of net piece in side slope protection, the staple of includes the staple body, and two nail leg one end of the staple body are equipped with follows closely the point, is provided with first buckle and second buckle respectively on the two nail leg middle part inboards of the staple body, and staple body axis symmetry setting is followed to first buckle and second buckle, set up the draw -in groove that blocks the net piece on first buckle and the second buckle. The utility model provides a be used for blocking staple of net piece in side slope protection can solve that the net piece hardly keeps impartial problem with domatic distance when implementing suspended net and tear the construction, can guarantee to net piece and domatic distance for the design value among the construction method, and the installation is a plurality of the utility model discloses it is impartial with domatic distance to guarantee to net the piece, makes the net piece play better reinforcement function to domatic ecological substrate material. Low cost, simple structure.