The This study proposes promoting of shared growth between large and SMEs through the improvement of supply chain information infrastructure. Although there have been some policy efforts for the shared growth, the channels are reserved to buying companies and dealings with the companies' tire 1 subcontractors whose credit ratings are relatively high. Those subcontractors that belong to tier 2 or below in supply chain still very much at disadvantage in the current framework. This might be caused by the absence of supply chain information infrastructure. Through constructing of the information sharing system, the cost of capital at the level of the entire sypply chain can be optimized and the stability of supply chain is expected to be improved.