Abstract: Choosing the appropriate collaboration pattern is the key to the stable development of alliance enterprises in dynamic environment. The environmental uncertainty is subdivided into eight states according to the three dimensions of complexity, dynamics and hostility. Then the optimal choice between development collaboration pattern and exploratory collaboration pattern in eight different environments is found.And the application of technology and manufacturing enterprises in eight different environments are explored. First of all,based on the complex adaptive system theory,the brand alliance interorganizational collaboration system state of environmental uncertaintyis analyzed.The conceptual model of interorganizational collaborationpattern selection among brand alliance organizations is constructed.Secondly, based on the theory of fitness landscape, the NK model of interorganizational collaboration system of brand alliance considering the resource elements of alliance organization is established, and its fitness function is optimized.Thirdly, according to the data obtained from the case study and referring to the relevant research results, the behavior criteria, parameters and algorithms related to computational experiments are set.Finally,the relevant conclusions are drawn. The results show that the development collaboration pattern and exploratory collaboration pattern have the local optimal phenomenon under eight different environmental conditions. In the external environment with abundant and volatile resources, the exploratory collaboration pattern should be chosen by technological enterprises.In the external environment with scarce and stable resources, the development collaboration patternshould be chosen by technological enterprises. In the external environment with rich and stable resources, the exploratory collaboration patternshould be chosen by manufacturing enterprises.In the external environment with scarce and volatile resources, the development collaboration pattern should be chosen by manufacturing enterprises.In this article, the expansion and application of complex adaptive system theory in the field of strategic management is enriched. And the fitness function formula in uncertain environment is constructed, the practice of fitness landscape theory in the field of brand strategy is substantial.Therefore, enterprises should pay more attention to the external environment and enhance the ability to identify external resources.According to the changing trend of the current and future external environment, and combining with its own attributes and characteristics,the appropriate interorganizational collaboration mode of brand alliance should be chosen by the enterprises.

Key words: brand alliances, collaboration patterns, environmental uncertainty, NK model