Provided is a vehicle door lock device having a structure enabling easy mounting of a pivot lever and urging means configured to urge the pivot lever to pivot. The urging means locked to a base member and the pivot lever does not generate an urging force when the pivot lever is positioned at an outside position at which the pivot lever is positioned on one direction side with respect to an in-operation pivoting range, and when the pivot lever pivots from the outside position to the in-operation pivoting range, an elastic deformation piece climbs over a temporary stopper while being elastically deformed, and the urging means locked to the base member and the pivot lever is elastically deformed to generate the urging force.