The year of 2013 is the 100th anniversary of E. P. Odum's birthday, who is the father of modern ecology. Odum's Fundamentals of Ecology has a positive effect to push ecology from tradition to modern, which mainly displays in the following aspects. It greatly improved the quantification level of ecological science and created the framework of ecosystem ecology. It advocated the mutual penetration of ecology and social sciences, and enriched the connotation of the ecological economics and ecosystem services research. It extended the research scale of ecology and offered a guid for the change of production and green movement in our society. Certainly, there are limitations and rooms for improvement, in his ecology theory such as the holistic analysis method, the evolution dimension in his ecosystem theory, and the emergy concept for energy quality. Despite these, he is definitely one of the world's most prominent ecologists.