Based on the intelligence of the finance experts and the knowledge engineering researchers, this paper tries to analyze and summarize the internal rules of the big data of market information, and to construct the finance ontology base and the ontology reasoning rule repository of the trends of economic trends, through the various market factors of the economics of China. It uses ontology reasoning technology to translate the experience from the finance experts and the objective rules of economic development into machine readable and computable ontology reasoning rules, based on which ontology reasoner performs economic trends prediction.