Introduction: Meat is considered as one of the basic items in the food basket of families. In many cases, different types of meat are considered as substitute goods and the appropriate choice among them depends on factors such as price, household income and consumer taste. Changes in consumption preferences may occur due to households' exposure to economic issues and it is expected that the structure of these preferences towards types of meat will change and evolve with the increase in awareness. Since in all economic texts, the main basis of the theory of consumer behavior is the reasonable and rational behavior of the consumer, the accuracy of many studies and research related to consumption and the estimation of demand functions depends on the validity of the hypothesis of rational consumer behavior.
Materials and Methods: In this study, using nonparametric methods and considering Weak, Strong, and Generalized Axions of Revealed Preferences (WARP, SARP and GARP), the sustainability of consumer preferences regarding the meat basket, divided by income deciles, was examined for the period 1992-2019. To test the existence of the utility function and rational consumer behavior, the weak axion of revealed preferences (necessary condition), the strong axion of revealed preferences (sufficient condition), and the generalized axion of revealed preferences (necessary and sufficient conditions) were used. 
Results and Discussion: After examining the WARP, SARP and GARP, no contradictions were observed. The results showed that although the per capita consumption of various types of meat in Iran changed due to price changes and other economic, health, and social factors, and the tendency toward chicken and fish increased, this change was not due to changes in preferences, and there was coherence in the preferences of meat basket consumers across income deciles. 
Conclusion and Suggestions: As the results showed, the composition of meat consumption in Iran has changed and consumers have replaced red meat with poultry and fish in their consumption basket, but this change is not due to changes in preferences but due to changes in economic, health and social factors, and there is consistency in consumers' preferences for meat basket across income deciles. Accordingly, it is essential to pay attention to the supply and production of red meat along with fish and poultry, and due to the important role of red meat in cellular health and satiety, effective support policies should be put on the agenda to provide this basic food, especially for the underprivileged segments of society.