Library, archives, museums collection resources integration provides the basis of widespread use and share of cultural resources. Compared with the same type organization resources integration, the difficulty of LAM resources integration increases owing to different types of collection resources, metadata standards, and description of fine grain size. On the basis of analysis of the integration process of LAM collection resources, it is considered that the essence of the integration of LAM collection resources is the integration of metadata among various institutions. The metadata integration methods of collection resources are divided into three types: metadata-based, ontology-based, and linked data model based for mapping. Combining with the development of semantic web, the advantages and disadvantages of each kind of integration method are analyzed, and the realized way of mapping of EAD with ontology and linked data model is demonstrated.