The invention discloses a method for determining an entity relation diagram, device, server and storage medium, The method comprises: determining at least one entity in the target data, and extracts entity relationships between entities, determining the reliability of each of the entity relationships, according to the ranking of the reliability, A target entity relationship and correspond target entity pairs are determine, As that object entity relation is connected with the object entity pairs, the entity relation diagram is for and stored. The technical proposal solves the problems of storage overhead and tedious process caused by the storage of the existing entity and the relationship data, simplifies the determination process of the entity relation diagram, improves efficiency and saves storage space.