Abstract: According to the report of the 19th and 20th National Congress of the Communist Party of China, in the future, the overall goal of China's development by 2035 is to achieve significant leaps in strength in economics, science and technology, and in comprehensive national power, reaching the level of moderately developed countries. China has achieved tremendous economic and technological achievements that have caught the attention of the world after more than 40 years of reform and opening up, and become an important innovative country. In the new era, China has established a strategy for building a strong country, accelerating the transformation from traditional industrialization to new industrialization, and is leaping towards innovative power, and is entering a new journey of comprehensively building a socialist modernized power. China has not only created miracles in the contemporary world economic history, but also become the world's first powers in economics, manufacturing, agriculture, innovation, foreign trade, modern infrastructure, and market entities and entrepreneurship. Her strength in economics, industry, science and technology, trade, infrastructure, and comprehensive national power have been constantly increased. So building a socialist economic modernization strong country in China is the economic foundation for building a socialist strong country, and is top priority. In the end the paper comes to the conclusion that china needs to continue to improve its economic strength, fully leverage its enthusiasm and creativity as the world's largest and most competitive market entity, and comprehensively build a world economic power.