The embodiment of the invention provides a method and device for registering detecting. The method comprises the steps that starting of an appointed application program is detected; registering window judging information corresponding to the application program is obtained; the fact that a currently-loaded window in the application program accords with the judging information of the registering window is detected; the safety attribute of a loaded component in the course where the currently-loaded window is placed is scanned; and according to scanned safety result information, whether registering information recording is carried out in the currently-loaded window is determined. After the application program operates and before registering operation is carried out, the loaded component of the application program is scanned, the fact that a trojan horse cannot be started with the application program is guaranteed, the safety of operation such as paying, registering and network communication is guaranteed, the problem that the trojan horse is started with the application program is effectively solved, malicious acts such as stealing of an account number, a password and key data are avoided, and the safety of the application program in operation such paying, registering and network communication is greatly improved.