The invention discloses a signature method and a signature device for program crashing. The signature method and the signature device for program crashing are used in the technical field of communication. The signature device for program crashing firstly obtains stack information which is called when the program crashes in the process that a computer system executes an application program and then obtains first stack information corresponding to the application program process from the obtained stack information and conducts signature for program crashing according to the first stack information. Due to the fact that the first stack information corresponding to the application program process can reflect the nature of one application program process and does not change due to different settings of computer systems of different users and namely operating environment of the application program process, the signature for program crashing obtained through the first stack information can also uniquely determine causes of program crashing, the phenomenon that signatures of two application program processes with the same natures are different caused by the same causes cannot occur, and finally determined causes of the program crashing are more accurate.