  We study the maximum likehood estimator and least squares estimator for drift
parameters of nonlinear reflected stochastic differential equations based on
continuous observations. Under some regular conditions, we obtain the
consistency and give the asymptotic distributions of the two estimators. We
briefly remark that our methods could be applied the the reflected stochastic
processes with only one-sided reflecting barrier spontaneously. Numerical
studies show that the proposed estimators are adequate for practical use.
