The invention discloses a drilling machine mechanism and a drilling machine. The drilling machine mechanism comprises a scaleplate rod, a drill rod, a vertically arranged supporting frame, an upper supporting platform fixedly connected with the top end of the supporting frame and a lower supporting platform fixedly connected with the bottom end of the supporting frame; one end of the drill rod penetrates through the lower supporting platform and is detachably connected with a drill sleeve, the other end of the drill rod extends to the inside of the upper supporting platform, and the drill rod is vertically arranged; one end of the scaleplate rod is fixedly connected with the upper supporting platform, and the other end of the scaleplate rod is fixedly connected with the lower supporting platform; the scaleplate rod is parallel to the drill rod, so that when the drill rod moves vertically, an operator can observe the moving distance of the drill rod through the scaleplate rod. According to the drilling machine mechanism, when a drill bit is used for machining a part to be machined, the defective percentage of machined finished products is low.