Monitoring system and monitoring method for signal quality of television networks

The invention relates a monitoring system and a monitoring method for the signal quality of television networks. The monitoring system comprises a monitor server and one or more monitoring devices connected with the monitor server; the monitor server sends a monitoring command to the monitoring devices; the monitoring command comprises quality parameter information; the monitoring devices measure quality parameter data of the position in which the monitoring devices are positioned after receiving the monitoring command, and send the measured and obtained quality parameter data to the monitor server; the monitor server analyzes the signal quality of communication links of the television networks according to the quality parameter data after receiving the quality parameter data; and according to the analysis result of the monitor server, the maintenance personnel of systems of the television networks are aware of the signal quality of the communication links of the television networks in time to conveniently ma