To connect front and rear carriers only when required, and to eliminate the requirement for mounting a device for conducting a connecting operation for the individual carrier.

This trolley conveyer is provided with the front and rear carriers 12 traveling respectively along a travel rail 11, and a drive wheel 81 engaged frictionally with the each carrier 12 to propel the carrier 12. The each carrier 12 has a front trolley 31 and a rear trolley 32 mounted respectively on the travel rail 11. A front connection member 51 is fixedly provided in the front trolley 31. A rear connection member 71 is provided fixedly in the rear trolley 32. The rear connection member 71 of the front carrier 12 is connected and disconnected to the front connection member 51 of the rear carrier 12, by conducting an elevation operation in at least one out of the rear trolley 32 of the front carrier 12 and the front trolley 31 of the rear carrier 12.