Abstract: In this paper，an optimal allocation algorithm for infrastructure services is proposed to solve resources allocation in the cloud computing.The key principle lies on the estimation of resources parameters based on the meta-zone.A minimum meta-zone is chosen which satisfies the requirements of user applications to improve the efficiency of infrastructure services’ resources.The detail implementation of the theory has three steps.Firstly，an infrastructure services model on the basis of meta-zone is constructed.Services model is composed of meta-zone controller，meta-zone nodes and user’s services.Secondly，an adapting model is proposed to map the user application to the meta-zone resource.Then the meta-zone schedule algorithm is proposed.The experiment appraises the method，and it achieves the good effect.