1.Milk-like fresh milk taste, the pleasant aroma lasts very long time. 2.Milk-like taste of fresh milk added with natural milk product, thus to allow suckling piglets to recall the breast milk impression, and help them transit from breast milk to teaching-trough feed as soon as possible. 3.1390S containing 20% spray-dried saccharin, which can increase the palatability. 4.1390S with 5% of γ-aminobutyric acid, which can reduce sharp response of piglets’ beginning to eat teaching-trough feed through the blood-brain barrier, and at same time, stimulate piglets to increase feed intake. 5.Because of flavor impression on breast milk and teaching-trough feed with breast milk flavor, feed is not easily changed for such pigs after their grown-up.