To provide a conveying device and a conveying system using an existing conveying device facility, stably switching normal and reverse directions, and improving a frequency of switching between the normal and the reverse directions by saving labor in work for switching the normal and reverse directions.

The conveying device moved along a conveying direction and conveying a material to be conveyed by being hooked by a claw includes a normally conveying claw and a reversely conveying claw for conveying the material to be conveyed in a rising state, a slide rod for rotating the normally conveying claw or the reversely conveying claw in a falling state, and a holding mechanism for holding the slide rod in a position for putting the normally conveying claw into a falling state and a position for putting the reversely conveying claw into the falling state.