In the baby product market, "ergonomic baby pillows" have become hot items on maternal and infant store shelves in recent years. Merchants promote them as having magical effects such as preventing flat heads, correcting head shapes, and improving sleep, captivating new parents. But is this "miracle product" priced from hundreds to thousands of yuan a necessary tool for scientific parenting, or just a marketing myth created by shrewd businesses? We need to analyze it rationally based on infants' physiological development and the product's actual effectiveness.