The embodiment of the present disclosure discloses a monitoring parameter threshold value setting method, comprising the following steps: selecting at least one threshold value indicator of the monitoring parameter that needs a threshold value setting forming and displaying a corresponding threshold value setting graphic according to the said threshold value indicator, wherein, in the said threshold value setting graphic, said threshold value indicator corresponds to an indication icon responding to the threshold value setting of the threshold value indicator by a user, and adjusting the indication icon corresponding to the threshold value indicator to the corresponding position of the said indicating graphic. The embodiment of the present application also discloses a monitoring system provided with the said monitoring parameter threshold value setting method, which can provide a graphical indication when a user sets a threshold value of the monitoring parameter, thereby improving the convenience and accuracy of the threshold value setting.