The study detected what kinds of factors will affect the staff attitudes when they face performance changes? We use "the correctness of perception" and "understanding of performance appraisal system" as attitude factors of a staff faced appraisal system change and make use of " communication perception "and" training effectiveness "as the test items. Utilizing a sample of 120 employees from a hospital in Taoyuan city, they were surveyed by questionnaires to test their attitude in performance change. The result shows that when organization has performance change, they can communicate with employees and then promotes their understanding. Using appraisal training for rater, the result also shows that we can add accountability to strengthen the inspects of training Management implications and recommendation are discussed for companies who will adopt performance change.