Developing green bonds is one of the tasks set out in the bond market development roadmap for the 2017-2020 period with a vision to 2030 approved by the Prime Minister in Decision No. 1191/QD-TTg dated August 14, 2017. But according to experts, the legal framework for green bonds remains vague, making capital flows into the field subject to caution. Vietnam must have clear and consistent regulations on green bonds. One of the first steps is to select appropriate green standards that international organizations around the world have set out.