[Purpose/significance] Tea Road is an important linear cultural heritage in our country, and it has rich digi? tal resources. In order to help the development of Tea Road 's application for World Heritage status, the knowledge or? ganization of Tea Road digital resources should be studied with the help of digital humanities methods and technolo? gies. [Method/process] Based on the perspective of digital humanities, this paper combines the Protégé tool with Neo4j, and proposes the idea of building a knowledge map of Tea Road digital resources. First, data collection and data analysis are carried out, and then the digital resource domain ontology of Tea Road is constructed with the help of Protégé tools. Finally, the ontology is mapped to Neo4j for storage to realize the construction of the knowledge map of Tea Road digital resources. [Result/conclusion] The construction of the Tea Road knowledge graph based on Neo4j re? alizes the visual storage and representation of resources, thereby revealing the complex and diverse relationships be? tween knowledge, mining the rich cultural connotations in the resources, and providing ideas for the development, utili? zation and ontology persistence of Tea Road resources.