To study the mechanical performance of prefabricated concrete beam-column joints with different connection forms, the cyclic loading test for one monolithic concrete joint and two prefabricated concrete beam-column joints were conducted to evaluate the damage characteristics, beam end's moment-rotation, joint core shear force-beam end's rotation, stiffness degradation and strain of steel plates. The results show that the prefabricated concrete joint with square steel tube experienced flexural damage, and the prefabricated joint with end plates and horizontal connection plates and monolithic joint presented shear damage at the joint core. The bending moment and shear force of prefabricated joints significantly increased, while shear deformation in the core area decreased, stiffness degradation constrained, and the rotation in the beam end significantly enhanced, thus the mechanical performance significantly improved. The joint with square steel tube and orthogonal steel plate had the best mechanical performance, which was much better than that of the monolithic joint. The connection forms in which steel connectors were added to the joint core region, H-steel was set in the beam end, welded or bolted connection were used on site, and post-casting concrete was poured in the connection area could effectively transfer force and improve the mechanical performance.