Disclosed are a print head supporting frame device and a character printer with the same, comprising: a bottom plate (1), at least four first adjusting assemblies, at least four second adjusting assemblies, and print heads (4). At least two sets of sliding grooves (11) are formed in the bottom plate (1). Long-strip-shaped holes (12) are formed in the sliding grooves (11) correspondingly one by one. A UVLED lamp installing groove (13) for installing a UVLED lamp (5) is formed between each set of the long-strip-shaped holes (12). The at least four first adjusting assemblies are installed in the sliding grooves (11) of the bottom plate and correspond to the long-strip-shaped holes (12) one by one. The first adjusting assemblies are used for adjusting the sliding positions of the print heads (4) in the length direction of the long-strip-shaped holes (12) in the long-strip-shaped holes (12) solely. The at least four second adjusting assemblies are installed on a sliding plate (21) and correspond to the long-strip-shaped holes (12) one by one. Each second adjusting assembly comprises a rotation fixing plate (31) and a second adjusting structure (32). The print heads (4) are fixed on the rotation fixing plates (31) correspondingly one by one. The second adjusting structure (32) is used for adjusting rotation angles of the print heads (4) solely.