Taking the listed companies in China from 2007 to 2015 as a sample， this paper studies whether auditor experience can improve accounting information comparability. The results show that under the same conditions， the more experience the auditor has， the higher accounting information comparability will be. Further， this paper examines the role of internal and external supervision between auditor experience and accounting information comparability. This paper finds that as the internal control quality increases， the effect of auditor experience on accounting information comparability decreases； as the institutional investor shareholding ratio increases， the effect of auditor experience on accounting information comparability decreases. In an additional test， we find that the relationship between auditor experience and accounting information comparability is more significant in Non-big 4. At last， after distinguishing the review auditor from the field auditor， we find that the review auditor experience and field auditor experience all improve accounting information comparability.