Abstract:Referring to many relevant documents concerning management plans and implementation schemes over Chaohu Lake, materials concerning Chaohu Lake eutrophication, algae outbreak, water quality and inflowing pollution load, sources of pollution, water environment management are collected, comprehensive research and analysis are done, experience and lessons are summed up and the management techniques are integrated. Based on above, the comprehensive management thoughts are raised as follow: The management of algae outbreak should be listed into the controlling aim; Cutting down algae numbers and reducing eutrophication should be combined closely; More algae should be reduced than its growth rate until being eliminated eventually; Different techniques should be combined together with accordant insurance measures. Specific management measures are as follow: Control pollutant source is the basic measure, among which the main measure is increasing emission standard of sewage plants to a large scale and control animal cultivation; Govern seriously polluted rivers, among which the top choice should be microbial purification in the small rivers; Separate algae salvage and reduce algae numbers in many ways; Transfer water in a proper scale, under the premise of ensuring flood control safety and ecological safety; Accelerate projects like transferring water from Yangtze River to Chaohu Lake or Huaihe River; Purify water; Enlarge environmental capacity; Restore weed wetlands; Increase the vegetation coverage from 5% to 20%; And combine dredging with lifting ecological recovery base.