Portable trestle

The utility model discloses a portable trestle which comprises bearing platforms, main beams, module cover plates and modularized protective fences, the bearing platforms are of cast-in-place reinforced concrete structures and are arranged at the two ends of the position needing to be spanned on a construction site, and the main beams are composed of H-shaped steel and are evenly erected between the bearing platforms at intervals. The module cover plate is arranged on the main beam and detachably connected with the main beam, the module cover plate comprises a checkered steel plate and a plurality of pieces of I-shaped steel which are uniformly and fixedly arranged on the bottom surface of the checkered steel plate at intervals, corresponding round holes are formed in the main beam and flange plates of the I-shaped steel located on the edge of the checkered steel plate, and the main beam and the I-shaped steel are connected through high-strength bolts. The modularized protective fences are fixed to main beams