The main purpose of this treatise is to clarify the issue of Dangerous Driving Causing Death or Injury in Japan (Act on Punishment of Acts Inflicting Injury or Death on Other(s) by Driving a Vehicle § 2). In 2000s, the purpose on legislation regarding this crime was to response the public opinions about severely punishment in terms of “Mean Driving”. However, in order to reach the social expectation, the end result of this crime bill was considered to be ambiguous. Such controversial issue could be stated in three significant figures. First, the Dangerous Driving Causing Death or Injury seems be reckoned as an offense aggravated by results of a crime. Nevertheless, dangerous driving is not to deem to be a distinct crime in the basic criminal act. Second, the legal constitutive requirements of this crime, which were used to define the dangerous driving actions are equivocal—thus the interpretation of the behavior is onto personal value judgement. Third, as to the application of causation, it could be explained in certain formalized ways. For instance, the harmful results caused by driving mistakes may be deemed as lack of relevance in dangerous driving behaviors according to the legislative instructions but still found guilty on the court. Overall, it can be addressed that the worst problem of interpretation and application in this crime at judicial adjudication is to ignore the nature of criminal danger, and the judgement of causation would be in mere form. Furthermore, the constitutive requirement of this crime is not in accordance with the seriousness of behavior. Rather, it is an act of against traffic regulations. Consequently, the objective dangerousness of this crime would be hollowing out—just like a normal car accident. To resolve the dilemma, the issue with interpretation and application are illustrated by means of analysis to theories and cases based on the essential of aggravated resulting crime in criminal danger. Moreover the viewpoints suggested in this treatise could reflect the similar conundrum under the current circumstance in Taiwan (Art. 185- 3 of the Criminal Code).