Abstract: The contents of carotenoids and retinol in milk were investigated by HPLC from 3th month to 10th month.The results showed that the contents of carotenoids showed considerable seasonal changes and the highest contentwas about 1 7.88 μ g/100ml in August and September the lowest content was about 10.24 μ g/100ml in March andApril The contents of carotenoids in milk and milk production changed in opposite directions. No seasonal patternof changes could be recognized in the content of retionol in milk.

Key words: Carotenoids Retinol Milk Seasonal changes