The subject innovation relates to a tubular-type digital door lock with a one-piece drive deadbolt. The driving unit is designed to be configured to include a worm gear, rack gear meshes with the worm gear value which is provided to the rotating shaft of the drive motor, the drive motor; Rotating gear teeth on the outer peripheral surface is formed with the shaft structure constituted by an arm which extends from the rotation part formed long; A locking sensor for sensing contact with a surface of the arm portion determines whether or not the locked state or unlocked state of the dead bolt; The main control board that receives the signal from the locking sensor operating the drive motor; The dead bolt is formed at one dead bolt for moving the slider in association with the shaft structure; And the driving unit, the shaft structure, and a digital door lock provides a tubular type having a one-piece drive unit that is configured to include a dead bolt of the locking sensor and the main body for receiving the dead bolt slider. The subject innovation conventional mechanical tubular-shaped by having a drive unit consisting of a door lock of the main body inside the drive motor and the worm gear and rack gear and can automatically implement the locking / unlocking function of the door lock, the dead the drive bolt and coaxially according to the by placing the phase may reduce the volume of the door lock according to a further increase of the driving unit, thereby reducing the production cost. In addition, it is possible to promote a user's convenience, by further provided with a door closed sensor to perform an automatic locking function by the signal from the door closed sensor when the door is closed. Digital door lock, worm gears, gear racks, door closed sensor, the sensor locking, unlocking the sensor, the elastic member, the lever shaft