Abstract: Abstract: With the increase of China's energy demand and the enforcement of environmental protection, biological gas industry draws more and more attention. In order to understand biological gas industry development level, evaluation of industry competitivenesshas become an urgent problem. The analytic hierarchy process and fuzzy comprehensive evaluation method were applied to the evaluation of biological gas industry competition. 22 indices were adopted in order to construct an evaluation index system of biological gas industry competitiveness. The 22 indices included the scale competitiveness, economy competitiveness, technology competitiveness, manage competitiveness, sustainable development competitiveness in 5 aspects. A biological gas industrial competitiveness evaluation model based on the integration of analytic hierarchy process and fuzzy comprehensive evaluation method was used to evaluate biological gas industry competitiveness in Beijing. The analytic hierarchy process was used to establish judgment matrix by the comparison of the relative importance of indicators, calculate and check each indicators, the fuzzy comprehensive evaluation was applied to determine the evaluation set, construct the subordinate function of each indicator and single factor evaluation matrix. Then multiply the subordinate degree by the weight of each indicator，the evaluation result could be gained. The comprehensive utilization of analytic hierarchy process and fuzzy comprehensive evaluation method could solve the complicated multi-factor problem in decision making, thus not only overcome the issue of subjectiveness of analytic hierarchy process in handling hard-to-quantify indices, but also avoid the shortcoming of neglecting index weights with fuzzy comprehensive evaluation method. This study based on industry competitiveness content tried to build a comprehensive biological gas industry competitiveness evaluation model. It was used for the diagnosis of biological gas industry competitiveness, and verified through the Beijing. Evaluation results showed that the synthesis score of scale competitiveness in bad membership degree was 0.49, belongs to bad level,the restriction factor mainly was the number of practitioners and total gas consumption. The synthesis score of economic competitiveness in medium membership degree was 0.65, belongs to medium level, the restriction factor mainly was the situation of increasing farmers' income. The synthesis score of technology competitiveness in good membership degree was 0.54, which belonged to good level, the restriction factor mainly was the situation of talent attractiveness. The synthesis score of administrate competitiveness in medium membership degree was 0.54, which belonged to medium level, the restriction factor mainly was the operation management model at the level of technical safety management. The synthesis score of sustainable development competitiveness in excellent membership degree was 0.51, whicn belonged to excellent level. The biological gas industry competitiveness in Beijing belonged to medium level, whicn had obvious advantages in the aspect of waste resource utilization ability and pollutant emissions, and had high level in the aspect of scientific research investment and technology equipment, whicn had medium or poor level in the aspect of management level and economic benefits, industrial scale, etc. It need improve and promote more. The model reasonably well represented the status of biological gas industrial competitiveness in Beijing. The research results could provide the basis for biological gas industry development of Beijing.