Three-dimensional protractor

The utility model discloses a three-dimensional protractor which comprises a plane protractor, a track and a drill rod, a rotary connecting rod is arranged on the upper surface of the track and comprises a static rod and a movable rod, the static rod and the movable rod are rotationally connected through a bolt, the static rod is in contact with the upper surface of the track, the upper end of the movable rod is fixedly connected with a connecting rod, and a fixing device is arranged on the side edge of the static rod. The fixing device comprises a fixing base, a device groove, an extrusion spring, a T-shaped limiting block, a clamping plate, a connecting strip, a cleaning brush, an open groove, a guide rod, a supporting spring, a rotating rod and a collecting box, the side, away from the movable rod, of the static rod is fixedly connected with the fixing base, and a cavity is formed in the middle of the fixing base, so that the plane protractor can be placed in the fixing base to work, and the angle is conve