The invention discloses an electric tool. The electric tool is provided with a housing consisting of a cylindrical main body and a holding handle part; multiple parts are stored in the main body in the axial direction; the electric tool is characterized by comprising a motor used as a driving source and a speed reduction mechanism, wherein the motor comprises a rotor component and a stator component, wherein the rotor component is positioned on the internal side of the stator component; the rotor component comprises a rotating shaft which rotates synchronous with the rotor component and is provided with a cavity; and the speed reduction mechanism is at least partially configured in the cavity of the rotating shaft. Compared with a traditional gun-drill type electric tool, the electric toolhas the advantages that the axial length of the electric tool is smaller than the length of the traditional gun-drill type electric tool, the volume of the electric tool is small, the structure is compact, the weight is light, the inertia is low, the power is high, and meanwhile, the structure of a torque transmission device is greatly simplified. The transmission efficiency of the system is enhanced.