The invention discloses a steel tube tower node which comprises a main tube and two branch tubes which are fixed with the main tube, wherein the main tube and the branch tubes form a K-shaped node structure; the main tube is fixedly welded with an independent node board respectively corresponding to each branch tube; the node boards are connected with the branch tubes by bolts. The steel tube tower node disclosed by the invention can fully use steels and develop the bearing capacity of materials; meanwhile space is saved, so that the connection of steel tube towers is performed conveniently.