At present, there is little discussion and research in the practical circles on the judgment of the police using firearms, through the analysis of judicial judgments, the analysis of the cases of court judgments and police guns in our country, and the empirical study of the police use regulations to find out why the police have used firearms over the years. What type of judgment is the type of police officer's judgment based on? The importance of evidence in front of a gun at the scene of a crime? The provisions of the Police Equipment Use Ordinance on the use of firearms are necessary to be discussed, and it is necessary to improve them in the future and enrich education and training to improve the accuracy of the use of guns by police officers, so as to meet the needs of the police and the expectations of the people, so that the applicability of police officers in the use of firearms can be improved.
Therefore, the focus of this study is not on the use of firearms by police officers to legalize the evidence, but on the expectation of providing the correct method in the psychological abdomen of police officers before firing the gun. The research method, mainly from the judicial judgments over the years, analyzes the reasons for judging the use of guns before using firearms, and establishes persuasion for the psychological action of judging guns. After analyzing the common types of firearms in judicial judgments, how to define the importance of on-the-spot evidence is made and make suggestions.