Mangrove wetland is an important pivot linking land and sea,thousands of marine organisms live,feed and reproduce in mangroves ecosystems.Mangrove wetland has unique geomorphological features and complex and diverse internal structure.It integrates the universality and particularity of the ocean and land,with strong inclusiveness.This paper focuses on the common species in the mangrove ecosystem of Guangxi from three aspects:Mangroves on the table,mangrove birds and insects in Guangxi.