The utility model provides a very install tool among door and window, the location of enduring in being applicable to drilling installation, including a body, a groove has been offered along Y axle orientation in body up end middle part, a body side is equipped with an upper portion and fixes a position protrudingly and lower part location arch, and the relative another side of body is equipped with upper portion operation arch and lower part operation is protruding, the protruding joint in upper portion location is in in the straight first constant head tank, and the lower part location is protruding pegs graft in in the straight second constant head tank, being equipped with a first electric drill guide hole in the upper portion operation arch, being equipped with a second electric drill guide hole in the lower part operation arch, first electric drill guide hole sets up respectively in the groove both sides with second electric drill guide hole, and just the hole center of first electric drill guide hole is equal to the distance of Z axle with the hole center of second electric drill guide hole to the distance of Z axle. The utility model discloses can be so that the position accuracy increase of operation simplification, personnel's operation strength reduction, mounting hole.