Abstract: Discretism is a methodology system for the understanding and transformation of the world, mainly solves the problem of the origin of the world in the digital society. Discretism regards the objective world as infinite countable and divisible on ontology, emphasizes the relationship and mapping among divisible elements on epistemology, and takes the elements and value relevance among these elements as the path of reconstructing the world on methodology. The mathematical methods of Discretism are based on discrete mathematics, and the empirical facts of Discretism are based on Consuming-based Production Theorem and Identity Theorem of Consuming and Producing