Fire extinguisher air tightness test tool

The utility model discloses a fire extinguisher air tightness test tool, which comprises a table top and a clamping mechanism arranged at the top of the table top, the clamping mechanism comprises a fixed seat fixed at the top of the table top, a threaded push rod is arranged at the top of the fixed seat, and a buffer assembly is arranged at one end of the threaded push rod. A clamping assembly is connected to one end of the buffering assembly, a fixed clamping assembly is arranged on one side of the clamping assembly, and the buffering assembly comprises a buffering box and a movable block movably arranged in the buffering box; by means of the designed buffering assembly, clamping force generated in the clamping process can be buffered to a certain degree, even if the situation that the clamping force is too large due to the fact that the force is not controlled well occurs, the buffering assembly can also conduct buffering adjustment on the too large clamping force, the clamping mechanism has good self-adap