Taking into consideration that Poisson noise is a special non-Gaussian Lévy noise, the authors study the averaging principle for a class of stochastic differential equations with Poisson noise, (see, e.g., [I. M. Stojanov
and D. D. Bainov
, Ukr. Math. J. 26(1974), 186–194 (1975; Zbl 0294.60051
)]) for stochastic differential equations in
with Lévy noise. Solutions to stochastic systems with Lévy noise can be approximated by solutions to averaged stochastic differential equations in the sense of both convergence in mean square and convergence in probability. The convergence order is estimated in terms of noise intensity. Two examples are presented, and a numerical simulation is carried out.