To provide a screwdriver with a slip-stopper capable of quickly and surely tightening long screws and screws turning without much strength with oily hands.

A slip stopper 4 is provided on a scrwdriver shaft 3 from its tip 1 to its grip 2. A screw that can be turned without much strength in such case as tightening a long screw into a fixed nut is screwed by holding the screwdriver shaft 3 between your fingers and turning the screwdriver by chafing your fingers. Thus screws can be quickly and smoothly tightened to where strength is required.