Pollutions of water, atmosphere,soil and yawp have been found in Dongchang Lake eco-function reserve, and the large amount of TSP in atmosphere and eutrophication are the most serious pollution.The water of Dongehang lake comes mostly from the Yellow River.Local government has already taken construction and protection in Dongchang lake in order to develop tourism.On the basis of the character of this area, this area has been divided into 5 subfunction areas according to principles and ways of eco-functional regionalization, namely,source self-restraint, city ecological forest constructing area, ecological agriculture tour area, colligation ecological agriculture area and business, inhabitant, culture and education area.Text brings forward construct and protection plan on different sub-function district and makes suggestions on development of the whole area.