Introduction : Simulation is a version of some real tools or work situations that tries to exhibit some behavioral features of an abstract or physical system through behavior of another system. The main purpose of application of simulation in health care is preparing students to confront with clinical situations which can increase patients’ safety, decrease errors and refine nurses’ clinical judgments. This approach decreases so much complications of learning which exist in real world. By this method, students gain the opportunity of learning skills which in real world there is little possibility to gain them. Simulators are planned in a way that can show reaction against wrong actions of students and assist in correcting actions with proper feedback.