Resource management system for cloud computing is used for receiving resource requests of users and providing service for users by encapsulating given resources.How to provide the right resource for users is a valuable topic.By analyzing resource provisioning policies for cloud computing in current situation and combining the feature of resource that unit cost of different resource provided by different cloud provider is different,propose CRP(capacity-reliability-price) algorithms based resource provisioning policies for cloud computing.This policy not only provides good service for users,but also reduces the management cost of cloud service provider.