A kind of nipple structure-improved,It includes a nipple,The nipple front end has one to suck end,This is sucked end Hou side and is connected with a neck,It is in arc-shaped that this, which sucks end,It is slightly inside contracted by the diameter for sucking end to the neck,With sharp infant occlusion； And the neck Hou end is connected with an ontology,And this suck end,Neck,The outer surface of ontology takes continuously smooth curve to connect； Guide ribs are provided on the inside of the neck,The guide ribs are in a spiral manner on the inside of continuous winding what neck,The flow velocity or flow when the nipple are flowed out by guide ribs control liquid,And strengthen the structure of the neck by the guide ribs.一種奶嘴改良結構，其包括有一奶嘴，該奶嘴前端具有一吸吮端，該吸吮端後方連接有一頸部，該吸吮端呈圓弧狀，由該吸吮端至該頸部的直徑略為內縮，以利嬰幼兒咬合；而該頸部後端連接有一本體，且該吸吮端、頸部、本體的外側表面採取連續平滑曲線連接；在該頸部內側設置有導引凸緣，該導引凸緣是以螺旋方式連續繞設於該頸部內側，藉由該導引凸緣控制液體流出該奶嘴時的流速或流量，並由該導引凸緣強化該頸部的結構。
