The invention relates to the crane beam system construction field, in particular to a crane beam frame construction method. The method comprises three steps of assembling on the ground, integral-hoisting and commissioning of formal railings. The crane beam frame comprises a crane beam (1), a brake board (2), a truss (3), a horizontal support frame (4), a connection plate (6), a hinge plate (7) and stopping plate bolts (8). The crane beam frame is characterized in that the crane beam frame also comprises temporary railings (51), formal railings (52), railing bolts (53) and connection members (9), the upper part of the crane beam (1) is fixed with the temporary railings (51) through the connection members (9) and the railing bolts (53), the upper part of the auxiliary truss (3) is welded and fixed with the formal railings (52); and the integral-hoisting and the commissioning of the formal railings are performed in turn after the crane beam frame is assembled on the ground. The invention reduces the quantity of works at heights, the operation is safe, the working efficiency and quality are high, the investment is little and the applicability is high.