The flux method was used to grow PbTiO 3 single crystals in the present experiment, and the domain structures of polydomain as-grown crystals have been studied using optical and electron microscopy. Investigations on etched crystals indicate that crystals grown under different conditions have similar domain structural characteristics, but those grown under conditions with heavy PbO evaporation show relatively complicated 90 ° domain arrangements. Various domain structures have been observed, including conventional 90 ° domain arrangements, herringbone structures, banded structures, and intersecting banded structures. In addition, domain bands that may correspond to transformation variants in alloys were also seen. Drawing schematic polarization configurations, one finds that head-to-head, tail-to-tail, or other unconventional domain configurations exist constantly in PbTiO 3 crystals, indicating that the high energy configurations are quite common in lead titanate crystals.