The invention discloses a health degree evaluation method based on monitoring index data, and the method comprises the following steps: S1), carrying out the unified setting of a network, middleware,a database and a server as configuration items, building a relation model between the configuration items, extracting a key performance index, and setting a weight for the obtained key performance index according to an importance level; S2) synchronously setting a performance index score deduction rule according to the alarm rule, and calculating the node health degree according to the performanceindex score deduction rule; S3) calculating the hierarchy health degree through the network hierarchy to which the node belongs, the weight of the network element level and the node health degree; and S4) layering the system, setting a hierarchical weight, and calculating the health degree of the system. According to the health degree evaluation method based on the monitoring index data providedby the invention, an existing operation and maintenance mechanism for passively receiving the fault information can be solved, and the service acceptance fault rate caused by the terminal performanceproblem is reduced.