obtaining monitoring data of a patient, the monitoring data comprising data of at least one of condition information, monitoring parameter information acquired of the patient by a sensor, parameter alarm information and user interaction information;

determining, by a processor of the patient monitoring device, whether a current alarm threshold associated with a monitoring parameter needs to be adjusted or not according to the monitoring data while the monitoring parameter is being monitored by the patient monitoring device in real time;

if it is determined that the current alarm threshold associated with the monitoring parameter needs to be adjusted, generating, by the processor of the patient monitoring device, threshold setting suggestion information according to the monitoring data, the threshold setting suggestion information indicating how the current alarm threshold associated with the monitoring parameter is to be adjusted;

outputting the threshold setting suggestion information on a display of the patient monitoring device; and

if it is determined that the current alarm threshold associated with the monitoring parameter needs not to be adjusted, continuing to obtain the monitoring data of the patient,

wherein the condition information comprises at least one of personal characteristic information, disease diagnosis information, a nursing medication record, a therapeutic scheme, and an electronic medical record; the monitoring parameter information comprises at least one of a monitoring parameter type, a monitoring parameter value, a change trend of the monitoring parameter value, and a parameter alarm switch state; the parameter alarm information comprises at least one of a number of times of a monitoring parameter alarm, a duration of a monitoring parameter alarm, an alarm priority, and an acousto-optic setting of a monitoring parameter alarm; and the user interaction information comprises at least one of a monitoring parameter alarm condition set by a user within a monitoring time, an operation of turning on or off a monitoring parameter alarm switch by a user, a number of times and/or a frequency of processing a monitoring parameter alarm by a user, and a response time of a user to the monitoring parameter alarm.