The utility model discloses a hot sealing material test fixture belongs to test fixture design field. Include: step motor, linear anchor clamps, rotary fixture and rotating electrical machines, the one end of linear anchor clamps is provided with the mounting groove, mounting groove and the sealed piece cooperation of making by the nuclear sealing material that needs checking, sealed piece is installed in the mounting groove, linear anchor clamps are kept away from the one end of sealed piece and step motor's output shaft, rotary fixture installs on the output shaft of rotating electrical machines, rotary fixture's side with sealed piece butt, the utility model discloses can control compression variable and reciprocal frictional force to sealing material, its simple to operate, controllability is high, has improved the testing efficiency of hot sealing material at the linear degree of freedom + the rudder face rotational degree of freedom dual function of the board direction of obturaging perpendicularly.