Coal and gas are two important resources in China,and it is an effective way to recycle them with the method of co-extraction of coal and gas.In view of actual situation of China’s co-extraction of coal and gas,this research adopts the science evaluation of gas extraction of coal by the method of quantitative evaluation,and preliminarily establishes the technical evaluation system of co-extraction of coal and gas.Technical evaluation system of co-extraction of coal and gas includes safety evaluation,economic evaluation and resource recovery evaluation in the process of mining coal and gas.In addition,this paper results in the selected evaluation parameters and target functions that are used in the three evaluation methods.The establishment of evaluation system for co-extraction of coal and gas plays an important theoretical significance and guiding role in co-extraction of coal and gas for China’s coal enterprises. Coal and gas are two important resources in China, and it is an effective way to recycle them with the method of co-extraction of coal and gas. View of actual situation of China’s co-extraction of coal and gas, this research adopters science evaluation of gas extraction of coal by the method of quantitative evaluation, and preliminarily established the technical evaluation system of co-extraction of coal and gas. Technical evaluation system of co-extraction of coal and gas includes safety evaluation, economic evaluation and resource recovery evaluation in the process of mining coal and gas. addition, this paper results in the selected evaluation parameters and target functions that are used in the three evaluation methods. establishment of the evaluation system for co-extraction of coal and gas plays an important theoretical Significance and guiding role in co-extraction of coal and gas for China’s coal enterprises.