【Abstract】 Objective To learn about the food consumption of rats dieted for 2 years. Methods The control group of a combined chronic toxicity and carcinogenicity test include 60 male and 60 female Specific Pathogen-Free Wistar rats (4 weeks old). The rats were acclimated for 1 week prior to initiation of the test. The rats were dieted with conventional feed. The study duration was 104 weeks. Food consumption were measured weekly for the first 13 weeks and once every 4 weeks thereafter. Results Food consumption of Wistar rats in their different life period was reported. The mean food consumption for male rats during 104 weeks was 26.3g/day/ rat and that for female rats was 19.5 g/day/ rat. Conclusions The data about the food consumption of Wistar rats reported in this paper can provide some reference for relevant technical staffs.