A foldable container for pet bathing includes a foldable supporting frame and a container body arranged on the supporting frame and constructed to be unfolded for containing a liquid for the pet to bath, wherein the foldable supporting frame includes two top supporting arms each including a rod body having a fixing cavity and a slot communicated to the fixing cavity, wherein the container body includes a bottom wall and a surrounding wall connected to the bottom wall, wherein the surrounding wall comprises an edge which is detachably mounted in the fixing cavity of the rod body through the slot.