Ecological environment-oriented development （EOD） is an important way to transform clear waters and green mountains into mountains of gold and silver. On the basis of systematically summarizing the practices and experiences of financing and development in the process of implementing EOD projects in various regions，this paper extracts and summarizes the six development modes that can be chosen to promote EOD projects in counties of Guangdong-Hong Kong-Macao Greater Bay Area，so as to provide references for the declaration and implementation of EOD development projects in Guangdong-Hong Kong-Macao Greater Bay Area.