The invention discloses an alarm clock adjusting method and device as well as a terminal, and aims at intelligently adjusting the ringing time of the alarm clock according to the alarm clock using habit of the user. The method comprises the following steps: recording operation data generated by operating the alarm clock by the user; analyzing the recorded history operation data to obtain an analysis result; and setting the ringing time of the alarm clock according to the analysis result. According to the technical scheme provided by the invention, the operation data is recorded, the recorded history operation data is analyzed to obtain the analysis result which reflects the alarm clock using habit of the user, and the ringing time of the alarm clock is set according to the analysis result, so that the ringing time of the alarm clock can be intelligently adjusted according to the alarm clocking using habit of the user, and better experience is provided for the alarm clock using of the user in life.