Abstract: The present invention relates to a convertible door lock device with a removable supporting pipe, which guarantees compatibility in construction according to a type of a door, being capable of selectively employing a movement preventing structure implemented by a supporting pipe according to the door type. The door lock device according to the embodiment of the present invention comprises the supporting pipe constituted by a pipe body including a fastening hole therein and a head part formed at one end of the pipe body, and a seating recess formed on an inner surface of the outer bracket for selective insertion of the head part of the supporting pipe. The head part of the supporting pipe is inserted in the seating recess of the outer bracket and the pipe body is inserted in a supporting hole dedicatedly formed on the door at a position outer than the mounting hole to be bolt-connected at the inside of the door through the fastening hole.