The forefinger should be pressed on the back of the handle. The most correct position to take the knife is "hold the handle, thumb on the side of the handle, the index finger pressed on the back of the handle." "Some people will put their index finger on the knife, this method is not correct." In addition to biting the root force to cut off the dishes, or knife is too blunt, the index finger can not reach the blade. Others will straighten their little finger with knives, especially women. Perhaps the parties think this posture is elegant, in fact, is wrong.