PURPOSE: A method of manufacturing a liquid container is provided to improve and to stably maintain sealability. CONSTITUTION: A liquid container comprises a container part(10) having a container body part of which at least one of an upper end and a lower end is opened； and a connection pipe(20) which is combined to at least one of the opened upper and lower ends of the container body part to be connected to an opening of the container body part. The connection pipe is formed of a rigid material, and a connecting cavity is formed in a region near the container body part penetrating in a widthward direction. The container part is formed of a soft material. The container part includes an inside cut off pipe part(12) and an outside cut off pipe part(13) which are extended in a longitudinal direction of the container body part from the container body part to adhere an outer surface and an inner surface of the connection pipe, and a connection bar(14) connecting the inside cut off pipe part and the outside cut off pipe part through the connection cavity. The connection pipe comprises a connection pipe body part(21) in a pipe shape, and a connection pipe cut off part(22) in a pipe shape in which the connection cavity penetrating in a thickness direction is formed and extended from the connection body part to make a T-shaped cross-section in cooperation with the connection body part. The inside cut off pipe part and the outside cut off pipe part are each adhered to an inner surface and an outer surface of the connection pipe cut off part. A binding ring(31) has a pressing rib(31a) curved inwardly at an upper part. A cap has a pressure rib(32a) cured outwardly at a lower part.본 발명은 액체용기와 그 제조방법에 관한 것으로서, 상단과 하단 중 적어도 어느 일방이 개구되어 있는 용기바디부를 갖는 용기부와, 상기 용기바디부의 개구에 연통하도록 상기 용기바디부의 상단과 하단 중 적어도 어느 일방에 결합되는 연결관을 갖는 액체용기에 있어서, 상기 연결관은 상기 용기바디부의 인접영역에 연락공이 두께방향을 따라 관통 형성되어 있고； 상기 용기부는 상기 연결관의 내표면과 외표면에 각각 밀착하도록 상기 용기바디부로부터 상기 용기바디부의 길이방향을 따라 연장 형성된 내차단관부 및 외차단관부와, 상기 연락공을 통해 상기 내차단
