Provide a kind of X-shaped girder construction, it includes multiple beams and multiple right-angled intersection portions, the multiple beam extends in X-direction, Y direction and Z-direction and forms lattice, X-axis beam, Y-axis beam and Z axis beam mutually merge each other at the multiple right-angled intersection portion, wherein, in X-shaped girder construction, the cross section of each beam has the geometry of X-shaped at a right angle, and beam cross part is formed with a continuous beam, and two other engagement beams are attached and are welded on continuous beam.