Pipe joint waterproof structure

The utility model discloses a pipe joint waterproof structure which comprises an embedded steel pipe, the two ends of the embedded steel pipe are sleeved with external water conveying pipelines respectively, the embedded steel pipe is provided with a fastening assembly in a matched mode, the fastening assembly comprises a connecting pipe, the connecting pipe is arranged on the surfaces of the water conveying pipelines in a sliding and sleeving mode, and conical sleeves are fixedly installed at the two ends of the connecting pipe respectively. The surface of the water conveying pipeline is sleeved with the conical sleeve at the same time, a plurality of through grooves are formed in the surface of the conical sleeve, the surface of the connecting pipe is rotationally sleeved with a fastening ring, the fastening ring can be installed on the surface of the conical sleeve in a threaded mode, a glue injection assembly is arranged on the surface of the connecting pipe, and glue is injected between the connecting pi