Food resources are the most important material foundation and energy source for animal to survive. The Study of the food selection and utilization of birds in different periods, is of great importance for us to understand the plasticity and the ecological adaptability of feeding behavior of birds. In this study, we investigated the food composition and consumption of Varied tit(Parus varius) by observation, video recording and food provisioning experiment during April 2012 to October 2013. The results showed that the feeding habits of varied tit are significant differences between breeding and non-breeding seasons, and the Varied tit mainly eat arthropods in breeding season, but eat a wealth of vegetation and a small amount of arthropods during non-breeding season. In breeding season, the adults mainly eat arthropds including Lepidoptera, spiders, Coleoptera, and they also eat a small amount of Orthoptera, Heteroptera and Hymenoptera; while the diet of young chicks are mainly Lepidoptera larvae(67.86%), followed by spiders, Lepidoptera imago, Hymenoptera , Coleoptera larvae, and a small amounts of Orthoptera. We thought there ware significant differences in diet between nesting and adults, especially in the proportion of Lepidoptera larvae, in which the nestlings’ diet has a extremely high proportion. In non-breeding season, the diet was made up of plant seed(48.91%)and berries(51.09%), the reasult of 16 kinds of potential food applies a higher percentage of berries too. The differences between the food composition and the plasticity of diets may be due to the seasonal changes of the food supply and energy consideration, but the impact of the seasonal variation in the abundance of food resources in the natural habitats on the food choice of Varied tits is still needed further research.