Abstract: The validation of conceptual models are still important and difficult in the verification,validation and accreditation of modeling and simulation．It is hard to validate conceptual models in single level because of their abundant,various and multi-level contents．A layered validation method of military conceptual models was advanced．The validation of military conceptual models is divided into three layers:system layer,model layer and design layer．The validation contents,the validation index,the validation process and the validation methods of each level of the conceptual models validation were analyzed．Advantages of the advanced method are to clear validation content and validation methods of each stage of conceptual modeling,decompound complexity of validation work and enhance the stage,hierarchy,pertinence and maneuverability of the validation work．

Key words: Military conceptual model,Layered validation,Ontology,Rule reasoning