Waterproof structure of underground communication port and construction method of waterproof structure

The invention relates to a waterproof structure of an underground communication port and a construction method of the waterproof structure.The structure comprises an enclosure part and a water seepage point waterproofing part; high pressure jet grouting piles are adopted in the enclosure part and arranged at the periphery of a construction joint in an enclosing mode and the bottom of a foundation of a new structure and an old structure; the water seepage point waterproofing part comprises a buried water stop belt for connecting the two sides of the construction joint, an expansion water stop strip, waterproof sealant, a waterproof roll, a removable water stop belt, a steel pressing plate and a cover plate, wherein the expansion water top strip and the waterproof sealant are filled in the construction joint, the waterproof roll, the removable water stop belt and the steel pressing plate are arranged on the top of the construction joint, and the cover plate is arranged on the top layer of the construction joint