Side-hole-opening-free embedded lug plate connecting joint suitable for steel module building

The utility model discloses a side-hole-opening-free embedded lug plate connecting node suitable for a steel module building, and relates to the technical field of modular steel structure houses in the building industry. The concrete structure of the side-hole-opening-free embedded lug plate connecting node comprises at least one lower corner piece; the upper corner fittings are mounted on the lower corner fittings in a one-to-one correspondence manner; the upper-layer floor beams are installed on the side faces of the upper corner pieces respectively, and every two adjacent upper-layer floor beams are perpendicular to each other; the lower-layer ceiling beams are installed on the side faces of the lower corner pieces respectively, and every two adjacent lower-layer ceiling beams are perpendicular to each other; the upper-layer columns are mounted on the upper corner fittings at intervals; the lower layer columns are mounted on the lower corner pieces at intervals; an upper connecting assembly is arranged in