  We perform a calculation on the polarization of J/psi production in deep
inelastic scattering in the HERA energy range. For the inclusive production
distributions, we find that the color-singlet contributions are consistent with
the experimental data in the major region of z (z>0.4). Only in low z regions,
there are some hints of the need of the color-octet contributions to describe
the experimental data. For the polarization of J/psi in DIS processes, we find
the parameter alpha changes with Q^2. Especially, at higher Q^2, difference on
alpha between color-singlet and color-octet contributions become more
distinctive. In the two regions of lower and larger z, the polarization
parameter alpha have different features. These properties can provide important
information on the polarization mechanism for J/psi production.

High Energy Physics - Phenomenology