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This paper introduces fuzzy evaluation based multisensor information fusion technology to process the data that obtained with various environmental sensors in the coal mine monitoring system. Through the synthetic operation with the decision rule at the data fusion center, the accurate state parameter estimation of the environment was obtained. Software instrument is introduced in the environment monitoring system to reduce the overall cost of system development and maintenance. Experimental result shows that the confidence level of the monitoring result is increased and the performance of the coal mine environment monitoring system is improved.