Glass curtain wall beam structure and glass curtain wall

The invention discloses a glass curtain wall beam structure which comprises a cross beam body, the cross beam body comprises a main cross beam and an auxiliary cross beam, the main cross beam and the auxiliary cross beam are oppositely attached, L-shaped connecting arms are arranged at the two ends of the main cross beam respectively, and mounting holes are formed in the ends, away from the main cross beam, of the connecting arms. A convex part is arranged at one end, opposite to the auxiliary cross beam, of the main cross beam, and a concave part is arranged at one end, opposite to the main cross beam, of the auxiliary cross beam and corresponds to the convex part. A first screw hole and a second screw hole are formed in the abutting part and the inserting part respectively. A screw embedding groove is formed in the end, away from the auxiliary cross beam, of the main cross beam and corresponds to the protruding part in position. Bearing arms are symmetrically arranged at the end, deviating from the auxiliar