To provide a wagon allowing a user to efficiently perform loading/unloading, or storing/taking-out of machines relative to the interior or inside of the wagon, and allowing the user to move a personal computer body without removing the wire connection when moving the personal computer body stored inside the wagon to the top board of the wagon.

This wagon is provided with the top board at such a height as being stored under the top board of a laboratory table or the like and its inside has such dimensions as storing a tower type personal computer body. A frame 1 of the wagon has an approximately rectangular shape in the plan view and includes at least a bottom board 2, casters 1a and top board support frames 1b and 1c, is detachably provided with at least one of left/right side boards 8 and 9 and front/rear face plates 7 and 10.