Negative ring duct piece of pre-buried sleeve and construction method of negative ring duct piece

The invention relates to the technical field of tunnel engineering, and particularly discloses a sleeve-embedded negative ring duct piece which comprises a plurality of duct piece blocks spliced into a ring shape, each duct piece block is of a reinforced concrete structure, and each reinforced concrete structure comprises a reinforcement cage frame and an embedded sleeve which is arranged at the preset position of the reinforcement cage frame and is provided with a plurality of through holes. The embedded sleeve does not penetrate through the bottom of the segment block, a concrete protection layer is arranged at the bottom of the embedded sleeve and is formed in the pouring process of the reinforcement cage frame, the embedded sleeve is filled with M5 mortar, and the M5 mortar in the embedded sleeve and the concrete protection layer at the bottom are chiseled away, so that the reinforcement cage frame is formed. And a hoisting hole penetrating through the negative ring duct piece is formed in the position of