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Recent studies among various activities taking place in order-picking warehouse system have shown various researches to reduce the order-picking costs occupying more than half the total costs. One way of improving the warehouse system performance is to separate from a picking area and a reserve area in one unit rack. This study is concerned on the performance evaluation model for picking and replenishing facility of refrigerated warehouse. We consider a situation traveling transporters using picking and replenishment trip from a reserve area to a picking area due to shortage items at picking area. Our objective is to determine picking and replenishing to minimize expected travel time and to improve the transporter performance. To estimate an operating time of transportation equipments to carry out order-picking, this study suggests three operations