Being an "artistic entirety" probing the campaign laws of the capitalist mode of production,Capital not only embodies directly in the strict logic architecture and rigorous theoretical content,but also in the unique methodology system that forms the strict logic architecture and rigorous theoretical content.The reason why Capital can become the work that can be handed down with permanent vitality is that Marx applies materialist dialectics to analyze capitalist production relations,uses abstract method and system analysis to analyze economic contradictions and structure of capitalism,using abstraction up to the specific method or logic and history consistent methods to analyze dialectical conversion of the economic category and logical evolution of the theory to probe the campaign laws of the capitalist mode of production.Knowing and grasping the methodology system of Capital probing the campaign laws of the capitalist mode of production is the important foundation for us to learn and understand Marxism,to persist and develop Marxism.