A work lamp with supporting frames comprises a vertical supporting frame, a horizontal supporting frame and a lamp body assembly and is characterized in that a pluggable connector is fixed at the top end of the vertical supporting frame, a bracket is fixed on the top of the pluggable connector, a locating hole is arranged at the bottom of the horizontal supporting frame, the lower end of a locating column is fixed on the pluggable connector, the upper end of the locating column penetrates through the bracket and is arranged in the locating hole in an inserting mode, an elastic lock catch is arranged on the pluggable connector, a fastening hole is arranged at the bottom of the horizontal supporting frame, the elastic lock catch can be fastened on the fastening hole so as to enable the horizontal supporting frame to be installed on the bracket in a detachable mode. The work lamp has the advantage that due to the elastic lock catch on the pluggable connector, operation of installing of the horizontal supporting frame on the bracket or detaching of the horizontal supporting frame from the bracket is achieved by operating the elastic lock catch, and operation is simple; and in addition, due to the fact that the pluggable connector, the bracket and the horizontal supporting frame are located through the locating column, an installing structure of the horizontal supporting frame is firm.