  In this paper, a study of light-cone distribution amplitudes for p-wave heavy
mesons is presented in both general and heavy quark frameworks. Within the
light-front approach, the leading twist light-cone distribution amplitudes,
\phi_M(u) and their relevant decay constants of heavy scalar, axial-vector and
tensor mesons, f_M, are formulated. The relations of some decay constants can
be simplified when the heavy quark limit is taken into account. After fixing
the parameters which appear in a Gaussian wave function, the corresponding
decay constants are calculated and compared with those of other theoretical
approaches. The curves and the first six \xi moments of \phi_M(u) are plotted
and estimated. These results all endorse the requirements of heavy quark
symmetry.
