A vehicle door latch device comprising: a casing; an operating lever disposed in the casing and having through an opening of the casing a coupled portion to which a coupling portion at an end of a motion transmitting member that can transmit a motion of an operating device is coupled; and an auxiliary cover that can close a coupling area in which the coupling portion of the motion transmitting member is coupled to the coupled portion of the operating lever, wherein a hinge shaft is disposed on one of the casing and the auxiliary cover, and a pair of elastic holding portions is disposed on the other of the casing and the auxiliary cover, wherein the hinge shaft engages in between the pair of elastic holding portions and rotates between a closed position where the coupling area is closed by the auxiliary cover and an open position where the coupling area is open, a stopped portion is disposed on the auxiliary cover, and a stopper portion which the stopped portion can contact is disposed on the casing, and when the auxiliary cover is rotated in an opening direction, the stopped portion gets over an end of the stopper portion, moves to an opposite side and prevents the auxiliary cover from rotating in a closing direction thereby holding the auxiliary cover provisionally in the open position, and wherein on an outer circumferential surface of the hinge shaft, there is provided a rotation preventing portion that can hold the auxiliary cover provisionally in a second open position by elastically contacting at least one of opposite surfaces of the two elastic holding portions and preventing a rotation of the hinge shaft relative to the elastic holding portion. a casing; an operating lever disposed in the casing and having through an opening of the casing a coupled portion to which a coupling portion at an end of a motion transmitting member that can transmit a motion of an operating device is coupled; and an auxiliary cover that can close a coupling area in which the coupling portion of the motion transmitting member is coupled to the coupled portion of the operating lever, wherein a hinge shaft is disposed on one of the casing and the auxiliary cover, and a pair of elastic holding portions is disposed on the other of the casing and the auxiliary cover, wherein the hinge shaft engages in between the pair of elastic holding portions and rotates between a closed position where the coupling area is closed by the auxiliary cover and an open position where the coupling area is open, a stopped portion is disposed on the auxiliary cover, and a stopper portion which the stopped portion can contact is disposed on the casing, and when the auxiliary cover is rotated in an opening direction, the stopped portion gets over an end of the stopper portion, moves to an opposite side and prevents the auxiliary cover from rotating in a closing direction thereby holding the auxiliary cover provisionally in the open position, and wherein on an outer circumferential surface of the hinge shaft, there is provided a rotation preventing portion that can hold the auxiliary cover provisionally in a second open position by elastically contacting at least one of opposite surfaces of the two elastic holding portions and preventing a rotation of the hinge shaft relative to the elastic holding portion.