For the safe handling of aniline, this study was investigated the explosion limits of aniline in the reference data. And the lower flash points, upper flash points and AITs(auto-ignition temperatures) by ignition delay time were experimented. The lower flash point of aniline by using Setaflash and Penski-Martens closed-cup testers were experimented $66^{circ}C$ and $73^{circ}C$, respectively. The lower flash point aniline by using Tag and Cleveland open cup testers were experimented $72^{circ}C$ and $78^{circ}C$, respectively. Also, this study measured relationship between the AITs and the ignition delay times by using ASTM E659 tester for aniline. The experimental AIT of aniline was $590^{circ}C$. The calculated LEL and UEL by using the measured low flash point and upper flash point were 1.16 Vol.% and 8.36 Vol.%, respectively.