The machine tool is provided with drilling and tapping functions, and can continuously drill F25mm and below holes and tap M24 (cast iron) and M22 (steel pieces) on ferrous metal, non-ferrous metal and nonmetal materials. Because of adopting overload protection box suitable for special motor frequently rotating clockwise and anticlockwise, brand-new electric control box and driving wheel corrected in balance, it has more reliable operation, stable clockwise and anticlockwise operation, smaller noise, and longer service life, and is widely used in single or volume production in the industries of machinery manufacturing, instruments and meters, hardware toys and repair industry.