Infants and young children belong to an important stage of sensory development and dietary habit formation. Color can serve as a core element for stimulating visual senses, playing a very important role in the field of complementary feeding. In order to unleash the value of color sensory experience in the teaching of "Rainbow Food" in the field of childcare, this article conducts a series of analyses and research on the application of color sensory experience in the teaching of "Rainbow Food" in the field of childcare. The results indicate that adopting specific application strategies such as scientifically designed formulas, innovative teaching methods, and establishing safety standards has significantly improved the quality of complementary food teaching activities in childcare, thereby providing more professional teaching support for the scientific feeding of infants and young children.