In recent years, due to the scarcity of non-renewable resources, many researchers started to pay more attention to the exploitation of new energy plants and plant biomass as a renewable resource. Salt-tolerant and high-oil plants which can grow well on large areas of saline and alkaline land, such as coastal land, are becoming potential energy resources, since it is not possible to grow energy plants on limited fertile soil land. For instance, the mangrove and many associated plants, which are important in coastal ecosystems, could be considered as potential candidates as energy plants. The application of mangrove as energy plants is very feasible and promising. In this paper, we summarized the investigation of the typical salt-tolerant plants-mangroves and mangrove associates to demonstrate their capacity to become the resources of biomass energy. V C 2012 American Institute of Physics. [http://dx.