Inaccurate specimen collection not only delays physician diagnosis, and increases nursing work and medical costs, but can seriously endanger the lives of patients. Before the advent of the project, the average return rate of specimens in this ward was 1.36%. Evaluation and analysis identified the problem: the lack of knowledge of nurses about inspection. The task force’s literature review and creative strategy, in addition to the knowledge, attitude and behavior model proposed by Baranowski et al. (2003), were used to improve the behavior of nurses vis-à-vis blood tests. The task force also organized on-the-job education, filming, and production of small-scale inspection cards. A realistic situation, i.e. a “blood collection dummy arm”, was used to improve the nursing staff’s professional knowledge and skills, thereby encouraging their behavior to fall line with their knowledge, attitude, and behavior patterns. The return rate subsequently dropped to 0.65%. This project improves the accuracy of ward blood screening, reduces the waste of medical costs, and enhances the knowledge of nurses about blood sampling, and, thus, ensures the quality of ward care and maintenance.