  We present new constraints on light dark matter boosted by cosmic rays (CRDM)
using the 205.4 kg day data of the CDEX-10 experiment conducted at the China
Jinping Underground Laboratory. The Monte Carlo simulation package CJPL\_ESS
was employed to evaluate the Earth shielding effect. Several key factors have
been introduced and discussed in our CRDM analysis, including the contributions
from heavier CR nuclei than proton and helium, the inhomogeneity of CR
distribution, and the impact of the form factor in the Earth attenuation
calculation. Our result excludes the dark matter--nucleon elastic scattering
cross-section region from $1.7\times 10^{-30}$ to $10^{-26}~\rm cm^2$ for dark
matter of 10 keV$/c^2$ to 1 GeV$/c^2$.
