Heat preservation structure of heat distribution pipeline

The utility model discloses a heat preservation structure of a heat distribution pipeline, which relates to the technical field of heat preservation structures of heat distribution pipelines, and particularly comprises an outer shell, two ends of the outer shell are fixedly welded with a connecting square pipe, an outer pipe is penetrated and sealed through the outer shell and the pipeline, and heat preservation can be carried out on the outside of the pipeline by utilizing a rock wool pipe shell, so that the heat preservation effect is improved. The heat distribution pipeline buried underground is prevented from being damaged through the attaching ring and the outer pipe, so that the heat distribution pipeline is protected, connecting ports are fixedly sealed through the connecting square pipes and the threaded holes, the connecting square pipes are sealed through the sealing gaskets, heat in the pipeline is prevented from losing after connection, the sealing performance of connection is improved, and the se