The utility model discloses a do indulge rib overhead steel mix composite entity case roof beam, this whole case roof beam include open -top's opening case roof beam and are located being used for its open -top confined steel of opening case back portion thoughtlessly make up the roof, the steel thoughtlessly make up the roof and become by steel sheet and cast -in -place concrete bridge panel group in steel sheet top, the up end of steel sheet is provided with a plurality of along indulging the bridge to the foraminiferous rib of indulging that extends, foraminiferous rib along the even spaced apart a plurality of through -hole that is equipped with of its length direction of indulging, a plurality of is foraminiferous indulge wear to be equipped with in the horizontal through -hole that corresponds of rib with the foraminiferous perpendicular PBL shear connector of arranging of rib of indulging. The utility model discloses an indulge rib overhead steel mix composite entity case roof beam not only possesses great ride -through capability and vertical rigidity, long service life, and construction speed is fast moreover, construction cost is lower.