Hydropower energy is a clean alternative energy that has less impact on global climate change than fossil energy. However, the subsequent displacement and resettlement caused by dam construction is a global challenge perplexing the displaced population and the stability of the local socio-economic system. Without proper reconstruction and rehabilitation, the resettlers were highly risked in impoverishment. The Chinese government has formulated and implemented the post-relocation support (PReS) policy for reservoir resettlement and has continuously supported the resettlers to improve their livelihoods and socio-economic conditions since 2006. This paper focus on the 20 years dimension before and after policy formation, tests the variation of resettlers’ livelihood capital and explores the effectiveness of the PReS policy and its blank spots based on a survey of 360 affected households by three big hydroelectric dams in China. The results show that reservoir resettlers would have caused the overall decline of resettlers’ livelihood capital. The prominent problem is that the reduction of land resources and population relocation leads to the changes of resettlers’ livelihood diversification and lifestyle change, which puts forward new requirements for the improvement of job skills and personal capability; the policy plays a significant role in rapidly improving the social, economic, and physical assets of resettlers in the early stage of reservoir resettlement; from the time scale of 15 years of policy implementation, the resettlement policy has an obvious slow-release effect on making up for the improvement of natural resources development and human capital; there are still blank spots in the current resettlement policy. Therefore, it is necessary to adjust and extend the policy for specific groups of people.

Hydropower engineering has brought unprecedented benefits to the world while causing massive displacement of people. Since the implementation of the Post-Relocation Support (PReS) policy for reservoir resettlers in China in 2006, the distribution of perceived livelihood resilience by gender of resettlers has gradually become more equal. Based on data from a survey of rural reservoir resettlers’ livelihoods in nine regions of Guizhou Province, China, this data examines the distribution of resettlers’ perceived livelihood resilience across genders using logit regression and then explores the contribution to gender equality. The empirical results show that, unlike previous studies, household economic conditions do not bring about more gender differences in perceived livelihood resilience among resettlers (gender contribution ratio = 1.12). Gender differences in perceived livelihood resilience among resettlers were influenced by household workforce levels (e.g., gender contribution ratio = 1.23 at high workforce levels), education level (e.g., contribution ratio = 1.87 in primary education), and resettlement methods (e.g., contribution ratio = 4.53 at external resettlement). The implementation of the PReS policy also contributes to the gender equality of these resettlers’ perceived livelihood resilience. For rural resettlers in different regions with different livelihoods, resettlement patterns, capital, and gender differences of resettlers should be understood through different livelihood resilience perspectives. Improving capacity building of resettlers’ livelihoods resilience through site-specific, participatory development and resource interoperability to promote high quality, sustainable and simultaneous development in resettlement areas and reservoirs.