Abstract: The construction of knowledge system of undergraduate training is an important way to meet the needs of knowledge and promote the transfer of knowledge value, and to improve the quality of personnel training. In the face of undergraduate training in the process of knowledge resources, the separation of knowledge demand and knowledge supply, the value of knowledge circulation and other barriers, Nanchang Hangkong University firmly grasp the point of knowledge ecological system of undergraduate talents training, focus on the cultivation of high-quality talents, and to match the needs of knowledge as the starting point, starting from the ecological knowledge node establishes a multi-faceted and multi link,to create knowledge through the ecological chain, the operation mechanism of the establishment of knowledge ecosystem, creating knowledge ecosystem the environment and other measures to construct knowledge ecosystem of talent training, promote the quality of personnel training.