Clamping tool for fuel gas pressure regulating valve cut-off unit

The utility model provides a clamping tool for a fuel gas pressure regulating valve cut-off unit. The clamping tool comprises a main body, a base and a clamping plate. The base is arranged at the bottom of the main body, the top of the main body is provided with an installation groove matched with the cutting unit, the installation groove is in a step shape, the top of the main body is provided with an avoiding groove communicated with the installation groove, the avoiding groove avoids a connector of the cutting unit, the top of the main body is provided with two cutting grooves penetrating through the upper side and the lower side of the main body, and the two cutting grooves are oppositely formed in the main body; the clamping plate is rotationally installed in the cutting groove, the two ends of the clamping plate extend out of the upper side and the lower side of the main body, an elastic piece is arranged between the clamping plate and the main body, a limiting piece for limiting the clamping plate is a