Incidents during the medication process occur at high rates in most hospitals. Therefore, reducing medical incidents is vital to guarantee healthcare quality. It is an effective countermeasure that improves the working method. In this paper, an error-proofing method is applied to reduce the frequency of such incidents. In order to simplify the process of planning error-proofing countermeasures, the following approaches are employed in this study: (1)Improvement elements are extracted in order to planning error-proofing countermeasures.(2)The Improvement elements that caused the error-factor are called improvement objects, and we designed the extraction set of improvement objects.(3)We correlated the improvement objects with the recommended error-proofing solutions. Finally, these parameters are collated. Moreover, these tools are summarized as a procedure for analyzing such incidents and devising appropriate error-proofing countermeasures. Additionally, this paper presents the results of the application of the proposed method in other Hospitals. In conclusion, the proposed procedure can facilitate the planning of error-proofing countermeasures and can reduce the medical incidents.