"National Competence Theory" richens and develops "National Situation Theory" and is regarded as "construction scale should accord with national competence". On commemorating the 100 anniversaries of Chen Yun's birthday, it is the important content of China's economic development to examine scientific connotation of "National Competence Theory" and to reveal inherent logic between Chen Yun's "National Competence Theory" and Deng Xiaoping's theory that "only development is very important".