A kind of feeding bottle protective sleeve structure； main body with a column； main body is by soft material with integrally formed； main body from top to bottom forms the two ring standing shapes such as double of setting of undaform； and there are a upper opening and a under shed； the arcuation of upper opening and main body directly shrinks to be formed, the bigger what upper opening of under shed, and under shed is flattened bottom flange is formed inside by one of main body； The nearly under shed of main body what is equipped with two inner protuberant rings.一種奶瓶保護套結構，具有一柱狀之主體，主體為由軟質材料以一體形成，主體由上而下形成如波浪型對半設置之兩環突出狀，且有一上開口與一下開口，上開口與主體之弧狀直接收縮形成，下開口略大於上開口，下開口為由主體之一往內平伸之底突緣所形成；主體於近下開口設有二道內突環。
