Flooding induced by sea level rise, intense rainfalls, land subsidence, typhoon and storm surges has provoked widespread concerns due to its adverse human impacts. Flooding events may disproportionately affect areas, communities, and individuals that already face greater socioeconomic disadvantage. While governments and other relevant institutions implement flood mitigation actions (such as “2020 Flood Control Action Plan of Ningbo”), these adaptation responses may also catalyse injustice by redistributing flood risks to already disadvantaged and marginalized groups. This research is designed to explore the potential injustice issues under flood risks in Ningbo, which is among the top twenty cities globally that are the most exposed to flood disasters. We will assess who is exposed to flood risks, who benefits and who burdens the risks from adaptation actions. Interviews were conducted in Ningbo to examine the distributive injustice related to typhoon and floods, and the Dongqiao and Zhougongzhai communities were further selected as cases to illustrate the risks of flood redistribution. We found that some groups (especially those with concentrated economies and resources) benefit from implemented adaptation strategies, while other groups (such as resettlement communities and poor communities downstream) seem to be excluded from flood prevention actions. Facing the increasing flood risks and the growing concerns to environment justice, more inclusive adaptation actions are needed to benefit all groups.