The utility model relates to a groover rotating tool holder, on it locates the groover, include the body, locate a plurality of cutters on the body, the middle part of body is equipped with and is used for locking the locking hole in the groover, be equipped with the more than one locating hole in the one side of body and groover laminating, the body along being equipped with the tool -holder groove with inclining evenly distributed week, it is equipped with cutter fender groove respectively to lie in each tool -holder groove top on the body, it is equipped with the apron that is used for clamping cutter to lie in tool -holder groove department on the body, it keeps off and to be equipped with the dog that is used for stopping the cutter upward movement on the groove to lie in the cutter on the body.