Whether　and　how　manufacturing　firms　can　enhance　their　overall　sustainability　performance　through　the　implementation　of　circular　procurement　management　is　still　unclear　and　under-researched.　Drawing　on　the　socio-technical　systems　theory,　this　study　develops　a　theoretical　model　and　explores　the　potential　impacts　of　circular　procurement　management　on　manufacturing　firms＇　sustainability　performance　(i.e.,　economic,　environmental,　and　social　performance)　while　examining　the　moderating　role　of　digital　traceability　and　collaboration.　Based　on　survey　data　from　250　Chinese　circular　economy　manufacturing　firms,　this　study　uses　hierarchical　regression　to　analyze　the　impact　mechanism　and　boundary　of　circular　procurement　management　on　sustainability　performance.　The　empirical　results　show　that　(1)　Circular　procurement　management　in　manufacturing　firms　can　significantly　improve　economic,　environmental,　and　social　performance;　(2)　Digital　traceability　positively　moderates　the　effect　of　circular　procurement　management　on　both　environmental　and　social　performance;　(3)　Collaboration　positively　moderates　the　effect　of　circular　procurement　management　on　both　economic　and　environmental　performance;　and　(4)　The　impact　of　circular　procurement　management　on　environmental　performance　is　positively　and　interactively　moderated　by　digital　traceability　and　collaboration.