In the present paper we consider a possibility of using stochastic simulati
on (Monte-Carlo) technique approach to the study of Galactic Cosmic Fray pr
opagation in the Heliosphere. We developed a technique for calculation of t
he cosmic ray propagation in a spherically symmetric steady state approxima
tion of the Heliosphere. A comparison of the calculation results with those
obtained by other methods as well as with an analytical approximation show
s a good agreement. Besides, in the frameworks of the approximation used, w
e calculated the solar modulation of monoenergetic fluxes of Galactic Cosmi
c Rays entering the Heliosphere, in the particle's energy range 0.1 - 15 Ge
V. We studied the details of the modulation in their dependence of the init
ial particle's energy. In particular, a linear scaling of particle's energy
losses us, diffusion time is shown.