The　shared　parking　scheme　improves　the　utilization　rate　of　existing　parking　resources　and　contributes　to　the　sustainable　development　of　cities,　but　many　private　parking　spaces　that　are　not　included　in　the　shared　parking　scheme　have　a　low　utilization　rate　in　China.　In　order　to　better　promote　the　shared　parking　scheme,　it　is　necessary　to　study　the　intention　of　the　owners　of　private　parking　spaces　to　share　their　parking　spaces.　Therefore,　this　paper　used　the　Unified　Theory　of　Acceptance　and　Use　of　Technology　(UTAUT)　and　Benefit-Risk　Analysis　Model　(BRA)　as　the　combined　theoretical　framework　(C-UTAUT-BRA).　Hypothesis　testing　using　the　Multiple　Indicators　and　Multiple　Causes　(MIMIC)　model　was　performed　using　an　empirical　assessment　of　the　shared　parking　scheme　in　China.　The　results　show　that　(1)　the　sharing　behavioral　intention　(BI)　is　directly　affected　by　perceived　benefit　(PB),　perceived　risk　(PR),　social　influence　(SI),　and　facilitating　condition　(FC)　and　indirectly　affected　by　effort　expectancy　(EE),　of　which　the　total　effect　of　PB　is　the　largest;　(2)　exogenous　variables　have　an　indirect　effect　on　BI　through　other　psychological　latent　variables;　among　them,　different　sociodemographic　and　economic　characteristics　have　a　significant　influence　on　different　latent　variables,　while　the　built　environment　has　no　significant　effect　on　latent　variables.　This　research　contributes　to　theory　building　in　shared　parking　participation　intention　and　informs　business　and　government　leaders　on　how　to　promote　the　shared　parking　scheme　through　the　action　mechanism　of　influencing　factors　on　BI.