A deep discussion is provided on the validity and prospect of the AAI for journal evaluation. This paper analyses the scientific basis, implementation issues, development and application of this quantitative indicator. It is found that AAI has advantages such as objectivity, efficiency, transparent calculation process and interdisciplinary characteristics. AAI cannot be used as an independent journal evaluation approach. It should be used as a supplement of other journal evaluation methods like expert evaluation and citation analysis. The validity of AAI in journal ranking has been tested in many subjects but need a further examination in LIS discipline.