Abstract: Construction project needs many stakeholders, so, the role of appropriate stakeholders is very important and project success depends on ability of those stakeholders. Only the top 1% construction companies operate an electronic procurement system to select their stakeholders while the remaining cannot have it. Therefore, this study demonstrated supply network collaboration system for small and medium construction companies in selecting appropriate stakeholders and showed a matching algorithm for supply network system based on credit, technology, performance, information and recommendations. This research proposed the supply network system including matching algorithm with suppliers and subcontractors. The proposed system had a following advantage: establishment of a risk management-oriented collaboration system (web/mobile); development of mutual sharing company pool and mutual evaluation algorithm; soundness analysis based on outsourcing partner search and matching service and; supply networking web system and mobile app. that can provide web 3.0 based optimization information. The proposed system can make economic and social positive effects. Efficient project management including partner (partner) management; business risk reduction: Recommendation of excellent suppliers and real-time monitoring function to remove dangerous; promotion of advanced Information Communication Technology (ICT) convergence technology development: Promotion and activation of related industrial technology development.