A patient lift having automatic folding and unfolding apparatus is disclosed. It comprises a base having a dynamic mechanism, two supporting legs connected to the dynamic mechanism for opening and closing actions, a main frame disposed on the base, a lifting arm pivotally connected to an end of the main frame, a lifting device disposed between the main frame and the lifting arm, and an automatic controlling module correspondingly connected to the dynamic mechanism and the lifting device to spread or close the two supporting legs and to elevate or reset the lifting arm.
