The present invention relates to the technical field of underground passageway structure, in particular, it relates to an assembled underground passageway comprising a plurality of ring-shaped members, each ring-shaped member comprising a plurality of blocks; a first butt joint is reserved between two adjacent blocks in the same ring-shaped member, and a second butt joint is reserved between two adjacent ring-shaped members, and a plurality of sealing strips in a cross-arrangement are provided in the each of the first butt joints and each of the second butt joints, and the sealing strips separate a plurality of sealing bins in the each of the first butt joints and the second butt joints; at least one inter-block connection mechanism is provided between two adjacent blocks in the ring-shaped members, and the inter-block connection mechanism separates a plurality of sealing bins. The sealing strip separates a plurality of sealing bins in each of the first butt joints and each of the second butt joints; at least one inter-block connection mechanism is provided between two adjacent blocks in the ring-shaped member, and each of the inter-block connection mechanisms is correspondingly disposed in one of the sealing bins, and injecting slurry into each of the sealing bins can make the sealing slurry fill the slits in each of the inter-block connection mechanisms to prevent the inter-block connection mechanisms from loosening; the sealing slurry filled in the sealing bins that is not provided with the inter-block connection mechanism can be used to seal the sealing bins. The sealing slurry in the sealing compartment can form multiple waterproofing with the sealing strip to avoid water seepage after aging of the waterproof rubber strip.