To facilitate access of an operator to a commodity container box, etc., installed on a truck by providing such constitution that a holding mechanism for the purpose of holding the truck is provided so as to be able to hold the truck in such a state as allowing at least partial overlapping of a cart structural body on the truck in vertical direction.

The frame 4 of a cart 1 for picking is formed in a gate type configuration by means of the total components consisting of left/right frame parts 5, an upper connection part 6 for communicating between upper parts, and left/right wheel attaching members 3. Accordingly, a container can be allowed to advance in a space A from both of front and rear sides of a cart. In the cart 1, a press-pushing device having a press-pushing member 15 capable of advancing/retreating by means of a link mechanism 14 is provided on one of left/right wheel attaching member 3. A truck having a container placed thereon is progressed into a space A, a container placing plate on the truck is pinched by the press-pushing member 15 and the inside surface of a cart wheel attaching member 3 so as to hold the truck. The cart 1 is pushed by hands to carry out picking work while allowing it to make integrated run with the truck.