Abstract: Attribute signature attracts much attention due to the large-scale applications of cloud computing. Sensitive information in the document needs to be hidden in cloud computing environment, and Attribute Based Sanitizable Signature (ABSS) scheme in cloud computing environment is proposed to solve this issue. The ABSS scheme brings the character of sanitizable into Attribute Based Signature (ABS) in order to hide sensitive information, ensure signers anonymity and achieve fine-grained access control. The ABSS scheme constructed in this paper is proved to be unforged in the standard model. Analysis shows that the proposed ABSS scheme is more appropriate for cloud computing environment to hide the sensitive information of the data.