  We represent the method of dynamic diffusion for the approximate solution of
Shroedinger equation with decoherence. Decoherence shows as the divergency of
exact solution from the dynamics of diffusion swarm, which arises when the
total number of real particles grows. The method of dnamic diffusion cannot be
reduced to the solution of differential equations, in contrast to Bohm's
quantum hydrodynamics, hence the direct computer simulation is the mandatory
step of its development. We compare the dynamic diffusion with the explicit
finite differences scheme for Shredinger equation for some standard one
dimension cases.
