The　park　integrated　energy　system　is　a　system　coupled　with　multiple　clean　energies　such　as　cooling,　heating,　electricity　and　gas,　and　it　is　one　of　the　important　ways　to　achieve　China’s　carbon　neutral　strategy.　However,　due　to　the　uncertainty　of　the　output　of　internal　clean　energy　units　and　the　mismatch　of　internal　supply　and　demand,　the　sustainable　development　of　the　park　integrated　energy　system　is　restricted.　Therefore,　this　paper　firstly　builds　a　comprehensive　price-based　demand　response　model　and　an　energy　policy　model　based　on　the　construction　of　a　park　integrated　energy　system,　and　analyzes　their　impact　on　the　system.　Secondly,　from　the　energy　supply　side,　the　uncertainty　set　of　clean　energy　output　is　constructed　based　on　robust　coefficient　to　avoid　output　risk;　and　from　the　demand　side,　a　comprehensive　price　demand　response　model　is　built　to　guide　the　rationality　of　energy　use;　On　this　basis,　an　optimization　model　is　built　with　maximizing　the　net　income　of　the　park　integrated　energy　system　as　the　objective　function.　Finally,　multiple　scenarios　are　set　up　for　case　study.　The　results　show　that　with　the　improvement　of　the　robust　coefficient,　the　risk　of　energy　supply　and　the　cost　of　deviation　penalty　can　be　reduced;　the　implementation　of　integrated　demand　response　can　improve　the　matching　degree　of　supply　and　demand,　bring　better　economic　and　environmental　benefits,　and　achieve　a　win-win　situation　for　users　and　the　system;　with　the　help　of　energy　policies,　on　the　basis　of　a　reasonable　assessment　of　the　risk　of　clean　energy　output,　it　is　necessary　to　further　increase　the　supply　of　clean　energy.　©　2022　The　authors.