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In the period background of green circular economy, this paper designs the vector model of enterprise cost control using risk discriminate matrix and fits early warning curve of enterprise risk investment using MATLAB software, which get a new analysis method of enterprise cost changes and trend prediction. In order to verify the validity and reliability of the method, this paper takes the enterprise green nano materials research and development costs as the research object, and using MATLAB software carries on processing for the enterprise cost control early warning signal, we can obtain the fitting curve of enterprise cost change risk, which provides technical reference for the research of enterprise production cost.

Analysis of the Change and Trend of Enterprise Production Cost under the Background of Economic Cycle