Objective To evaluate the effect of educating nurses on how to prevent and reduce aspiration rate of patients. Methods 110 nurses were recruited from neurological department in our hospital and were trained systematically about the prevention and nursing of aspiration. We compared the scores they had before and after training. Results 110 nurses were all satisfied with the training. The pre-education test score about the aspiration knowledge was 65.6±9.6 while the post-education test score was 92.5±6.5. The difference of the score before and after training was statistically significant difference (P<0.05). The follow-up study indicated that 89% nurses are applying the knowledge gained from the training to their clinical work. Conclusion It's suggested that well-organized educational training may improve nurses' performance of preventing patients from aspiration and treating patients when they had aspiration, which left a positive effect on nurses' behavior.