The invention discloses an alarm processing method, a device and an access monitoring system. The method comprises the following steps: when detecting that an access electrical lock is unlocked at a designated place, judging whether a person is at the designated place according to the access card swiping record; under the condition that the judgment result is that a first person exists, judging whether a second person for managing the first person is in the designated place; and under the condition that the judgment result is that the second person does not exist, sending a first alarm hint. Through adopting the method, the problem that specific persons entering into or exiting out of the designated place simultaneously cannot be monitored in the related prior art can be solved.