The Serie B 1957–58 was the twenty-sixth tournament of this competition played in Italy since its creation.
Prato and Lecco had been promoted from Serie C, while Triestina and Palermo had been relegated from Serie A. Relegations were cancelled in March by new Football League’s chairman Giuseppe Pasquale in order to expand the number of participants from 18 to 20.
Moreover, Bari, the second ranked team, had to play a qualification match with Verona, that ranked 17th in 1957–58 Serie A. Bari had to play a qualification match against the team that ranked 17th in Serie A. Bari promoted to Serie A.