A vehicle door lock device includes an active lever configured to bring an open link into a locked or unlocked state, and a child safety lock mechanism configured to enable pushing force transfer from an inside open lever to the open link in an unset state. Under a condition where the door is in an opened state, the active lever is situated at an unlocked position, and an intermediate member of the child safety lock mechanism is situated at an unset position, when a door opening operation of an inside door handle and an operation of a child safety protector lever for the intermediate member to move from the unset position to a set position are sequentially performed, a pushing portion of the intermediate member is engaged with an engagement portion of the active lever so that the active lever moves from the unlocked position to a locked position.