Abstract: The pre-checking method and a pre-checking system based on the OLAP pre-calculation model includes: acquiring a target query statement; querying for a model matching the target query statement in preset N query models one by one, and collecting a query log at the same time; performing analysis on the query log, and judging whether a matching model exists among the N query models according to the result of analysis; and, if no matching model exists, determining modification information for modifying the pre-selected model according to the result of analysis, the target query statement, and the data model set by the user. The pre-checking system includes an acquisition module, a query engine, and a query checking module. Whether a matching model exists can be ascertained timely by performing a pre-query in N models in advance. Thus, it is unnecessary to build models and perform query check repeatedly.