This invention provides an automotive door lock device capable of securely preventing a dropout of an operation connecting portion of an operation device from an operating lever connecting portion of an operating lever member. The automotive door lock device includes a housing having a housing body including an opening portion and a cover portion formed integrally with the housing body for opening and closing the opening portion. An operating lever member is placed in the housing and has an operating lever connecting portion. The operation device has an operation connecting portion to be connected to the operating lever connecting portion. The cover portion of the housing has a projecting portion for preventing a dropout of the operation connecting portion of the operation device.