<p style='text-indent:20px;'>In a service supply chain, the service capacity prepared before the final demand is realized can be used for multiple periods but may depreciate over time. This paper studies the impact of repeating transactions on the decisions and performances of the service supply chain under two operational modes: proprietary mode and agent mode. We show that under both modes, repeating transactions over and over again does increase the profits of platform service supply chain members. The number of periods and the depreciation rate of capacity influence the gap between decentralized and centralized supply chains only under agent mode but not under proprietary mode. In addition, compared with that under proprietary mode, agent mode yields a greater expected profit for the retailer and a lower expected profit for the supplier, and the increased expected profit of the retailer compensates for the expected profit loss of the supplier. Furthermore, we present a modified new proprietary mode and find that it can yield a greater expected profit for the whole supply chain under agent mode within certain regions. In the end, we extend our model to the situation in which the supply chain members pay for the service relevant cost.</p>