PROBLEM TO BE SOLVED: To provide a baby bottle washer which is compact and is capable of washing the inside of a baby bottle easily and reliably.SOLUTION: A baby bottle washer 1 is provided with a brush part 3 on one side of a charge member 2 in a cylinder shape. A user charges the baby washer 1 inside a baby bottle B (an arrow 53) and uses the water to shake and wash the baby bottle B with the baby bottle washer 1 inside. After the wash of the baby bottle B, the user holds the upside and the bottom of the baby bottle B reversely and takes the baby bottle washer 1 out of the baby bottle B (an arrow 54). The baby bottle washer 1 is compact, so that it can be thrown inside the baby bottle B. Since the brush part 3 is composed of modified cross-section fibers and freely changes in accordance with an inner face shape of the baby bottle B, the inside of the baby bottle B can be easily and reliably washed without using a detergent.COPYRIGHT: (C)2008,JPO&INPIT【課題】小型で、しかも哺乳瓶内部を容易かつ確実に洗浄することができる哺乳瓶洗浄具を提供する。【解決手段】哺乳瓶洗浄具1は、筒状の投入部材2の一側に刷毛部3を設けてなる。ユーザは哺乳瓶洗浄具1を哺乳瓶B内部へ投入し(矢符53)、水を用いて、哺乳瓶洗浄具1入りの哺乳瓶Bを振り洗う。哺乳瓶Bの洗浄後、ユーザは哺乳瓶Bを天地逆転させて哺乳瓶洗浄具1を哺乳瓶B内部から取り出す(矢符54)。哺乳瓶洗浄具1は哺乳瓶B内部へ投入可能な小型サイズである。刷毛部3は異形断面繊維を用いてなり、また、哺乳瓶Bの内面形状に応じて自在に変更するため、洗剤を用いることなく、哺乳瓶B内面を容易かつ確実に洗浄する。【選択図】図4