In order to study the seismic behavior of the connection between precast beam and precast column, a new type of assembled monolithic reinforced concrete frame structure side joint was designed, and the low cycle repeated load tests of one integral cast-in-place RC specimen and two assembled PC specimens with different lap lengths of longitudinal reinforcement were completed. The failure process, failure mode, hysteretic curve, skeleton curve, displacement ductility, strength degradation and energy dissipation capacity were studied. The results show that the failure process of the fabricated specimens is similar to that of the cast-in-place specimens, and the failure mode is the bending failure in the plastic hinge area of the beam end. The core area of the joint is in an elastic state, and the overall performance of the joint is good. The bearing capacity, initial stiffness and energy dissipation capacity of the fabricated specimens are equivalent to those of the cast-in-place specimens.The fabricated frame side joints based on the efficient connection technology of "rebar straight anchor short lap" are reliable in connection, convenient in construction and controllable in quality, and have good engineering application value.