Integrated　water　resource　scheduling　is　a　key　strategy　for　controlling　river　floods　as　well　as　for　promoting　the　benefits　and　abolishing　the　harmful　aspects　of　water　conservancy　projects.　It　is　necessary　to　explore　an　effective　development　mode　to　address　the　current　issues　of　long　development　times　and　poor　outcomes　for　integrated　water　resource　scheduling　models.　Drawing　on　the　concept　of　software　reuse,　a　development　mode　for　an　integrated　water　resource　scheduling　model　is　offered　based　on　＂platform　system　+　model　plug-in＂,　the　cores　of　which　are　plug-in　modules　and　interface　integration.　The　boundaries　and　connection　relations　of　each　plug-in　module　are　formed　based　on　the　logical　analysis　of　the　model　plug-in.　A　web　application　mode　is　used　to　implement　a　standardized　interface,　which　can　be　quickly　and　seamlessly　connected　to　the　system　platform.　The　model　is　explored　and　applied　in　the　Wudu　diversion　and　irrigation　area　in　China.　The　generated　model　is　eventually　verified　using　data　obtained　from　two　flood　periods.　According　to　the　simulation　results,　the　gate　operation　will　be　convenient,　and　the　target　water　level　will　be　attained　in　the　allocated　time　with　a　satisfactory　peak-clipping　effect.　It　shows　both　good　coordination　and　great　utilization　value　of　the　plug-in　modules.　The　concept　of　designing　a　plug-in　database　is　eventually　taken　into　consideration　for　combining　and　generating　an　optimization　model　of　each　river.