Total production in February (29 days) was 1.998Mt, compared with 2.139Mt in January (31 days) and 1.950Mt in February 2011.
Figures from the IAI also showed daily average primary aluminium output in China rose to 53.4kt in February, up from 48.9kt in January.
Total primary aluminium production in the country rose to 1.548Mt in February from 1.517Mt in January.
Production was up compared to February last year, when the average daily output was 46.6kt and total primary aluminium production for the month was 1.304Mt.
In January to February this year, China produced 3.065Mt of aluminium, compared to 2.588Mt in the first two months of 2011.