The invention discloses a power tool which comprises a working head used for achieving tool functions, a motor used for driving the working head, a tool shell used for containing the motor, a projection display device used for projecting information of the power tool to an object in front of the working head in a projection manner and a power supply device at least used for supplying power to the projection display device; the projection display device comprises a light source used for generating light needed by projection, a display screen used for displaying patterns needed by projection and a lens used for projecting the light generated by the light source in the specific direction; and the display screen is arranged between the light source and the lens. By means of the power tool, the information of the power tool is projected to the position in front of the working head, and observation by a user is facilitated.