Aiming at the complex problem of water resources allocation, the paper adopted the meta-synthesis method and established a platform which contained the resources of data, information, models, methods and knowledge, decomposed the complex water distribution model into components, adopted visualized knowledge map, transformed water resources allocation problems into topic maps; formd a water resources allocation HWME with characteristics of personalization, visualization, knowledge-based. Aided by the discuss information view, public view, personality view and history view, the paper provided a qualitative and quantitative solutions for complex water resource allocation problem.