Objectives: ：The purpose of this study is to identify differences between suicide attempters who used zolpidem and others who used different methods in emergency department. Methods: ：This study classified 2,734 suicide attempters, who went to emergency department from 2009 to 2018, into zolpidem user group, another drug user group and non-drug user group. For these three groups, chisquare test and logistic regression analysis were conducted regarding sociodemographic feature and clinical feature related with suicide. Results: ：In the result of logistic regression analysis of a variable, which showed meaningful difference between suicide attempter group who used zolpidem and the other group who did not use the drug, the occurrence of zolpidem-using suicide attempers was related with the case where anxiolytics/hypnotics was used or the case where lethality and intention was low. In the drug intoxication group which showed similar feature, there was also a relevance between anxiolytics/hypnotics and the occurrence of zolpidem-using suicide attempts. Conclusions ：This study identified significant difference of sociodemographic and clinical feature in suicide attempter group who used zolpidem and the other group. This result can contribute to plan further medicinal treatment in using zolpidem