Since its first pilot study was launched in 2003, China Accreditation Test for Translators and Interpreters (CATTI) has developed into the most authoritative translation and interpretation proficiency qualification accreditation test in China and played an important role in assessing and cultivating translators and interpreters. Based on the analysis of its form and content, the current study appraises CATTI in terms of reliability, validity, practicality, fairness and washback. The results suggest that CATTI has a satisfying validity and reliability, but the amount and types of test items, test content, evaluation rubrics and transparency are expected to be improved.