The research object is an apparent city lake what is threatened eutrophicationally in Huizhou West Lake. Aiming at lake nutrition degree and biology diversity, the lake ecosystem management and program are built from the point view of ecology. The management and programming start off from environment trait of West Lake, combine theory of superficial water rich nutrition and lake enjoying polymorphism. The key is that renewing and building high-level hydrophyte's community, combining fish and benthic animal adjustment and control, cutting down nutrition burden and optimizing lake management. So the ecosystem can achieve advantage of high-level hydrophytes, logical and self-clean and anti-jamming strongly ecosystem. At last, the balance of lake transfer can be realized.