The invention discloses an unhandled event reminding method, an unhandled event reminding device and a mobile terminal, wherein the method comprises the following steps of: receiving an unhandled event notification message generated by a target application in a desktop management application running process; generating user reminding information according to the unhandled event notification message; if the condition that the current state of the terminal is in a lock screen state is detected, displaying the user reminding information in a lock screen display interface of the desktop management application; and if the condition that the current state of the terminal is in a work state is detected, displaying the user reminding information in a message display region of the desktop management application. When the unhandled event reminding method, the unhandled event reminding device and the mobile terminal are used, relevant contents of unhandled notification can be fast organized and handled; in different terminal states, the corresponding user reminding information such as unread short messages and missed calls can be timely shown to a user in time through the desktop management application; the goals of timely transmitting the reminding information to the user and effectively avoiding the missing of unhandled events and important information by the user are achieved.