Method and system for monitoring service quality, and analytical method and system therefor

The embodiment of the invention provides a method and system for monitoring service quality. By mapping and converting the collected service performance KPI (Key Performance Indicator) into a service quality KQI (Key Quality Indicator) and a CEI (Client Experience Indicator),services utilized by the user can be systemized and applied to achieve analysis of entire network and full service, further to rapidly and accurately reflect the actual experience perception of using the services by the user. A method and system for analyzing service quality problems, provided by the embodiment of the invention, can be used for comparing the KQI with a preset threshold value through monitoring the service quality KQI; if the decrease of the service quality KQI is found, the decreased KQI is found and mapped to the KPI , and then the problems are located by analyzing the KPI; and an optimized solution is finally given to the problem in the analysis report form by combining with a knowledge base.