The invention provides report generating system and method of cluster monitoring, wherein the method comprises the following steps: performance index data of a monitored cluster system are stored in a data source; different types of report templates which contain different report attributes are designed and stored in a report template module; an interaction module receives a user request and stores the user request in a report engine; and the report engine receives the user request, reads out performance index data meeting the user request from the data source, reads out report templates meeting the user request from the report template module according to the user request, and sends the report templates to the interaction module for being shown to a user. The invention shows cluster monitoring data to users in a report form, provides different types of data statistics, comparison, analysis and representation modes and meets the requirement of users for learning cluster states and assessing system performance by monitoring data.