In the small-scale logistics system, it is important that the shelves can be effectively and timely transported to the picking area properly and quickly for picking. It has a great influence on the performance of the picking system. Moreover, in many automatic material handling systems (AMHS), the Automated Guided Vehicle is the most productive and flexible. Therefore, the selection of dispatching rule is also an important factor in the reduction of costs. This study applies the Arena Simulation system simulation software to simulate the process of a small picking area handling system and then to explore the control of the car. The system performances are influenced by the number of AGVs and the dispatching rules.