An integrated steel section automatic turning mechanism, comprising a base (1), the base (1) being provided with several conveying rollers (2) arranged at intervals, the base (1) being provided with fixed roller assemblies and turning roller assemblies on one side of the conveying rollers (2), the fixed roller assemblies comprising fixed roller supports (5) vertically fixed on the base (1), the insides of the fixed roller supports (5) being provided with rotatable fixed rollers (6), the turning roller assemblies comprising turning roller supports (7), the turning roller supports (7) being connected to turning drivers and being arranged between adjacent conveying rollers (2), the insides of the turning roller supports (7) being provided with rotatable turning rollers (10), an integrated steel section being located on the conveying rollers (2) between the fixed rollers (6) and the turning rollers (10), the base (1) also being provided with material pushing assemblies used for pushing over the integrated steel s
