The invention provides a fabricated concrete frame structure which comprises a main strut, a first connecting beam, a second connecting beam and fixed connectors. The first connecting beam and the second connecting beam are fixedly mounted on the two sides of the main strut respectively through the fixed connectors. External connecting reinforcement and internal connecting reinforcement are mounted on the two sides of the fixed connectors and are in crossed connection, and concrete casting grooves are formed in the main strut, the first connecting beam and the second connecting beam. Stirrupsare fixedly mounted at the tops of the concrete casting grooves, the concrete casting grooves are of slope-shaped inclined structures, the number of the stirrups at the top of each concrete casting groove is not smaller than six, and stirrup fixing supporting plates are mounted at the tops of the stirrups. By arranging a series of structures, the fabricated concrete frame structure has the advantages of being easy and convenient to use, high in assembling efficiency, high in manufacturability and the like.