Abstract: Based on the latest Sinicization of " Social Structure of Accumulation (SSA) Theroy”, namely, " Chinese Social Structure of Accumulation (CSSA) Theory”, this paper systematically analyzes the theoretical logic, historical logic and realistic logic on the new era of socialism with Chinese characteristics. This paper considers that the new era of Socialism with Chinese characteristics is a scientific explanation for China’s entry into the new CSSA after the transformation of CSSA, while the dynamic evolution logic of CSSA is the inner theoretical mechanism of Socialism with Chinese characteristics entering the new era. On this basis, this paper relies on actual data to get the " turning point” transformation of six contradictions, which include labor-capital relationship, capital-capital relationship, government role, ideology, international relationship and ecology contradiciton, providing realistic evidence for the entering a new era of Socialism with Chinese characteristics. Finally, this paper puts forward a systematic strategy to promote economic development of our country in the new era.