The utility model discloses a portable emergency lighting device for cities. The device comprises a base, universal wheels are fixedly installed at the four corners of the bottom surface of the base,a box body is fixedly installed at the top of the base, a cover plate is installed on the front side of the box body through a hinge, a vertical pipe is vertically and fixedly installed in the middleof the top of the box body in a communicating mode, and a lampshade is fixedly installed at the upper end of the vertical pipe. The inclined lamp panels are obliquely and fixedly installed on the periphery of the bottom of the lampshade, dazzling caused by the horizontally-arranged lamp panels is avoided, the water tank is adjusted on the box body, when the water tank is filled with water throughthe water injection pipe, the stability of the base is guaranteed, and the LED lamp is practical and suitable for wide application and popularization.