Over the past century since the founding of the party, the Communist Party of China has always been based on the country’s basic national conditions, social productivity, and people’s living needs, and has made scientific judgments on major social contradictions. Clarifying the party’s understanding of and resolving major social contradictions over the past century has basically formed the party’s valuable experience in resolving ma? jor social contradictions: The first is to establish scientific concept, that is, historical logic is the main keynote to solve the main social contradictions, seeking truth from facts is the breakthrough to solve the main social contra? dictions and strategic thinking is the commanding point to solve the main social contradictions;The second is to stick to the correct guidance, that is, deepening the guidance of Marxist theory is the insight to resolve the main social contradictions, strengthening the Party’s subjective consciousness is the driving force to resolve the main social contradiction and taking the people as the center is the effective force for resolving the major social contra? dictions;the third is to strengthen the development momentum, that is, development is the focus of resolving the main social contradictions, reform is the entry point for resolving the main social contradictions, and openness is the key to resolving the main social contradictions.