PURPOSE: A liquid receptacle is provided to steadily maintain the engaged state of a cap unit and a receptacle body unit although the receptacle body unit is manufactured by using silicone rubber. CONSTITUTION: A receptacle unit includes a receptacle body unit(11) having an opening part on the top. A cap unit(21) is engaged to the receptacle unit in order to cover the opening part of the receptacle body unit. The receptacle body unit is manufactured with a silicone rubber material. The receptacle unit manufactured with a solid material includes a support ring(12) of which an external surface is engaged to the internal peripheral surface of the opening part of the receptacle body unit by being forcibly inserted. The cap unit is engaged to the external peripheral surface of the opening part of the receptacle body unit by being forcibly inserted. The receptacle body further includes a connecting ring extended to an upper side from the support ring. The cap unit is engaged to the connecting ring in an attachable and detachable manner.본 발명은 액체용기에 관한 것으로서, 일단이 개구되어 있는 용기바디부를 갖는 용기부와, 상기 용기바디부의 개구에 연통하도록 상기 용기부에 결합된 마개부를 갖는 액체용기에 있어서, 상기 용기바디부는 실리콘고무 재질로 제작되고; 상기 용기부는 경성재질로 제작되고 외표면을 통해 상기 용기바디부의 개구 인접영역 내표면에 억지끼움방식으로 요철결합되는 지지링을 포함하는 것을 특징으로 한다. 이에 의해, 용기바디부를 실리콘고무를 사용하여 제작하더라도 마개부와 용기바디부 사이의 결합상태를 안정적으로 유지할 수 있다.