A kind of improvement of nipple structure, include the portion of sucking, a connection this suck the extension and a blocking portion in portion. Extension has a ring enhancement portion for extending outer wall, an extension inner wall and a formation what extension inner wall, the extension inner wall sucks portion with this and forms an inner space, centered on portion is sucked by this by the system, ring enhancement portion, it is protruded from the extension inner wall to the inner space, and around the extension inner wall, blocking portion system setting what extension sucks the one end in portion far from this. Therefore, by the setting in the ring enhancement portion, the elastic resilience of nipple can be effectively promoted, and equally keeps the flexibility of nipple, avoids the eating speed and wish that influence baby.一種奶嘴結構改良，包含有一吸吮部、一連接該吸吮部的延伸部以及一阻擋部。延伸部具有一延伸外壁、一延伸內壁以及一形成於該延伸內壁的環形強化部，該延伸內壁與該吸吮部形成一內部空間，該環形強化部係以該吸吮部為中心，由該延伸內壁向該內部空間凸出，並環繞該延伸內壁，該阻擋部係設置於該延伸部遠離該吸吮部的一端。因此，藉由該環形強化部的設置，可有效提升奶嘴的彈性回復能力，並同樣保持奶嘴的柔軟性，避免影響嬰孩的進食速度以及意願。
