A foldable container, comprising: a foldable supporting frame (10, 10') arranged to be operated between an unfolded position and a folded position; at least one operation switch, wherein the operation switch is coupled with the foldable supporting frame (10, 10') to operate the foldable supporting frame (10, 10') between the unfolded position and the folded position through a pulling operation of the operation switch; and a container body (30, 30', 30A), wherein the container body is supported on the foldable supporting frame (10, 10'), wherein the container body has an edge defining opening thereof surrounded by the edge, wherein at the unfolded position, the opening of the container body is opened, wherein at the folded position, the opening of the container body is closed, wherein the container body is automatically folded as the foldable supporting frame (10, 10') is moved from the unfolded position to the folded position, wherein the foldable supporting frame comprises two folding arms and at least four supporting legs, wherein each of the folding arms is supported by the supporting legs, wherein the folding arms are pivotally connected with each other at the operation switch, wherein the folding arm and the supporting leg are pivotally rotated with each other, characterised in that the container is a liquid container, and in that the folding arm (12, 12') further comprises a switch rod (122, 122'), wherein the switch rod (122, 122') is disposed at an end of one of the folding arms (12, 12'), wherein in the unfolded position, the switch rod (122, 122') is supported by the operation switch to limit a movement between the two folding arms (12, 12') of the foldable support frame (10, 10'). a foldable supporting frame (10, 10') arranged to be operated between an unfolded position and a folded position; at least one operation switch, wherein the operation switch is coupled with the foldable supporting frame (10, 10') to operate the foldable supporting frame (10, 10') between the unfolded position and the folded position through a pulling operation of the operation switch; and a container body (30, 30', 30A), wherein the container body is supported on the foldable supporting frame (10, 10'), wherein the container body has an edge defining opening thereof surrounded by the edge, wherein at the unfolded position, the opening of the container body is opened, wherein at the folded position, the opening of the container body is closed, wherein the container body is automatically folded as the foldable supporting frame (10, 10') is moved from the unfolded position to the folded position, wherein the foldable supporting frame comprises two folding arms and at least four supporting legs, wherein each of the folding arms is supported by the supporting legs, wherein the folding arms are pivotally connected with each other at the operation switch, wherein the folding arm and the supporting leg are pivotally rotated with each other, characterised in that the container is a liquid container, and in that the folding arm (12, 12') further comprises a switch rod (122, 122'), wherein the switch rod (122, 122') is disposed at an end of one of the folding arms (12, 12'), wherein in the unfolded position, the switch rod (122, 122') is supported by the operation switch to limit a movement between the two folding arms (12, 12') of the foldable support frame (10, 10').