The range of the business secrets has been enlarged with the coming of the big data era. The cloud technology contributes the value of the business secrets to the data, such as data-mined customer list, transaction prices, transaction targets, and so on, which were not classified into the business secrets to the data, such as data-mined customers list, transaction prices, transaction targets, and so on, which were not classified into the business secrets. Due to the unavoidable safety bugs of the cloud computing system and the lag of the legislation protection of the corresponding business secrets Due to the unavoidable safety bugs of the cloud computing system and the lag of the legislation protection of the corresponding business secrets, it is necessary for the companies to sign the contracts with cloud computing service providers, i.e., the cloud service contract. analysis of the cloud service contract samples, it is observed that there exist many inequality rules, for instances, the reserved rights to modify the contract at any time, the responsiblity of the contract, and the right of the contract holder to modify the contract. However, based on the analysis of the cloud service contract samples, it is observed that there exist many inequality rules, for instances, the reserved rights to modify the contract at any time, the responsiblities of the customers for the information safety, the hedge clauses to avoid the risks, the inequalities for different districts of the cloud service law management, etc.