  Pillars of Creation, one of the most recognized objects in the sky, are
believed to be associated with the formation of young stars. However, so far,
the formation and maintenance mechanism for the pillars are still not fully
understood due to the complexity of the nonlinear radiation
magneto-hydrodynamics (RMHD). Here, assuming laboratory laser-driven
conditions, we studied the self-consistent dynamics of pillar structures in
magnetic fields by means of two-dimensional (2D) and three-dimensional (3D)
RMHD simulations, and these results also support our proposed experimental
scheme. We find only when the magnetic pressure and ablation pressure are
comparable, the magnetic field can significantly alter the plasma
hydrodynamics. For medium magnetized cases ($\beta_{initial} \approx 3.5$),
{the initial magnetic fields undergo compression and amplification. This
amplification results in the magnetic pressure inside the pillar becoming large
enough to support the sides of the pillar against radial collapse due to
pressure from the surrounding hot plasma. This effect is particularly
pronounced for the parallel component ($B_y$), which is consistent with
observational results.} In contrast, a strong perpendicular ($B_x, B_z$)
magnetic field ($\beta_{initial} < 1$) almost remains its initial distribution
and significantly suppresses the expansion of blow-off gas plasma, leading to
the inability to form pillar-like structures. The 3D simulations suggest that
the bending at the head of `Column \uppercase\expandafter{\romannumeral1}' in
pillars of creation may be due to the non-parallel magnetic fields. After
similarity scaling transformation, our results can be applied to explain the
formation and maintenance mechanism of the pillars, and can also provide useful
information for future experimental designs.
