Chinese dredging industry has been developing for hundreds of years,and dredging works has already extended to eco-environmental-protection field.However,because of the lack of environmental dredging specifications,most of the current general dredging specifications and experience are used in the calculation of engineering quantities of environmental dredging projects in the design stage,which is quite different from the actual situation of environmental dredging.The confirmation of the implementing project quantity directly influences its audit and payment,which will have a big impact on project contractor benefits.By analyzing several environmental-protection project cases,combined with the actual project quantity calculations of environmental-protection projects in the Dian Lake,according to environmental-protection dredging techniques and characteristics,the measurement method fit for environmental-protection projects are discussed to provide reference for subsequent similar projects.