Aspects relate to recommending ETL workflows for performing specific tasks based on user inputs related to a predetermined business domain while complying with policy and access conditions. Provided is an ETL workflow recommendation device including a knowledge database for storing an overall knowledge graph including an ETL knowledge graph that at least indicates ETL information about a predetermined business domain in a graph format, an input management unit that receives a user input related to the predetermined business domain and converts the user input into a graph query for searching the overall knowledge graph, an ETL recommendation unit that searches the overall knowledge graph using the graph query and generates ETL workflow candidates with respect to the user input; and an output management unit that evaluates the ETL workflow candidates and outputs an ETL workflow report indicating a recommended ETL workflow.