As a nondestructive and subsurface detecting technique, scanning near field acoustic microscopy (SNAM) with different operation modes is applied to study ferroelectric domain structures in BaTiO3 ceramics at sub-micrometer scale. Furthermore, by comparison with results of the conventional Scanning Electron Acoustic Microscopy (SEAM), the ferroelectric domain structures at different surface depths of the material can be detected nondestructively. In order to study the dynamic properties of ferroelectric domains, the ferroelectric domains of the same ceramics have been imaged at different temperatures near the Curie Temperature. The results showed that the ferroelectric domains disappeared over the Curie Temperature, and abruptly changed the polarization at certain temperature points under the Curie Temperature. By these examples it will be demonstrated, how these near-field acoustic microscopies are complimentary techniques for the nondestructive research of ferroelectric materials.