A method for monitoring operation and maintenance based on a station state, comprising: determining service types of network elements within a station according to network types to which the network elements belong or types of the network elements and classify the network elements into corresponding preconfigured station service types; and respectively analyzing network element alarms of the station service types to obtain the degrees of influence of alarm services, and obtaining the alarm priorities of corresponding network elements according to the degrees of influence of the alarm services and influence factors of station services, so as to provide a basis for task assignment; wherein obtaining the alarm priorities of the corresponding network elements according to the degrees of influence of the alarm services and the influence factors of the station services comprises: recognizing at least one preconfigured priority judgment strategy, wherein the priority judgment strategy defines an alarm priority two-dimensional mapping table of the degrees of influence of the alarm services and the influence factors of the station services in two dimensions; and looking up the alarm priority two-dimensional mapping table according to the degrees of influence of the alarm services and the influence factors of the station services, and obtaining the alarm priorities of the corresponding network elements; wherein the degrees of influence of the alarm services comprise service cancellation, service degradation and normal service, the service cancellation means that if such an alarm occurs on a network element, functions of the network element will fail to operate normally, the alarm is an important and emergent alarm, and a service of such an alarm has the greatest influence; the service degradation means that if such an alarm occurs on a network element, functions of the network element may operate or some of the functions may operate, but the quality of service may deteriorate; the normal service means that if such an alarm occurs on a network element, functions of the network element may operate normally, operation and maintenance staff do not need to maintain task assignment at first hand, the alarm has the lowest degree of emergency, but the operation and maintenance staff still need to pay attention continuously; wherein the influence factors of the station services are divided into multiple levels, which represent that alarms in different areas will be processed according to different priorities. determining service types of network elements within a station according to network types to which the network elements belong or types of the network elements and classify the network elements into corresponding preconfigured station service types; and respectively analyzing network element alarms of the station service types to obtain the degrees of influence of alarm services, and obtaining the alarm priorities of corresponding network elements according to the degrees of influence of the alarm services and influence factors of station services, so as to provide a basis for task assignment; recognizing at least one preconfigured priority judgment strategy, wherein the priority judgment strategy defines an alarm priority two-dimensional mapping table of the degrees of influence of the alarm services and the influence factors of the station services in two dimensions; and looking up the alarm priority two-dimensional mapping table according to the degrees of influence of the alarm services and the influence factors of the station services, and obtaining the alarm priorities of the corresponding network elements;