Abstract: A baby bottle holder, that fits a shoulder of a bottle body, that prevents slipping, is easily holdable, and has thermally-insulating grips to facilitate preparation of milk, is made of a thermally-insulating and flexible elastic member, and integrally includes a tubular cover and a conical cover therebelow covering the shoulder of the bottle body, and a tongue-shaped grip pair extending downward from symmetrical positions on both sides of the conical cover. Fingers grasp non-slip surfaces of the grips, which provide insulation from heat, and can easily shake the bottle body. During feeding prepared milk, the grasp of the fingers on the non-slip surfaces of the grips prevents slipping-off of the bottle body. An infant's hands can also grasp the grips preventing slipping-off of the bottle body.