A silicone baby bottle which is made of silicone which does not generate environmental hormones is disclosed. The silicone baby bottle allows an infant or young child to be safely fed. The silicon baby bottle includes a body part, a nipple, and a coupling member composed of a first coupling ring and a second coupling ring which are screwed with each other to be coupled. The body part and nipple are made of silicone which is a soft material and the coupling member is made of a rigid material so that a coupled structure of the body part and nipple can be tightly sealed. Since only the body part and nipple made of silicone are allowed to come into contact with infant formula and infant's mouth, the infant is not exposed to environmental hormones attributable to synthetic resin.