The invention mainly discloses a connecting joint for H-shaped steel multi-ribbed steel hoop precast composite beam and steel mixed precast wall. The connecting joint comprises the H-shaped steel multi-ribbed steel hoop precast composite beam and the steel mixed precast wall. An H-shaped short corbel is arranged on the steel mixed precast wall, the steel mixed precast wall is connected with the H-shaped steel multi-ribbed steel hoop precast composite beam through the H-shaped short corbel, and concrete is poured among an upper flange plate, a lower flange plate and a web of structural steel and on the connecting joint. The connecting joint for H-shaped steel multi-ribbed steel hoop precast composite beam and steel mixed precast wall has the advantages that the construction speed is high, anti-seismic performance is good, and materials can be recycled and reused, and further can have the advantages of being fire-resistant, heat-preserving, sound-insulating, impact-resistant and the like.