Abstract: Region-contribution-rate of the Chinese instant noodles industry of 2004 in two calculation methods. Results show that there are regional differences among the regional instant noodles industries due to the different development-patterns. Three common models of developing instant noodles industry were concluded, including strengthened external-network pattern, regional enterprise differentiation pattern and leading enterprise migration pattern. Based on above conclusions and the impetus-acts theory, applying cause-effect circulation and feed back analyses method, acts and impetus mechanisms of the enterprises and governments in term of the three patterns was analyzed. In conclusion, it is suggests that the instant noodles industry in China should changes the single pattern into coupling pattern.