The utility model relates to a well cementation cement truck plunger mounting tool technical field is a well cementation cement truck plunger installation specialized tool, including a lead screw and a plunger installation section of thick bamboo, be equipped with the screw thread on the lead screw, plunger installation section of thick bamboo upper end fixed mounting is on the lead screw, and lead screw lower extreme an organic whole is fixed with the addendum cone, and the plunger installation section of thick bamboo lower extreme outside is equipped with installation section of thick bamboo screw thread. The utility model has the advantages of reasonable and compact structure, convenient to use, the effectual plunger of having guaranteed does not receive the mechanical injury that artificial damage and workman caused in the installation, through the cooperation use of a plunger installation section of thick bamboo and lead screw, have security performance height, non -maintaining advantage.