The utility model provides a multifunctional integrated actuator assembly which comprises a rack, an actuator, a locking device, and a piston rod, wherein the actuator is installed on the rack, the locking device is used for adjusting the position of the integrated actuator assembly and installed at the bottom of the rack; the piston rod is used for transmitting a driving force, the piston rod is connected with a guide plate in linkage mode, the top of the piston rod is provided with a linkage component, and the linkage component is installed on the rack through a guide bearing of the guide plate; and a first connecting piece and a second connecting piece are respectively connected with the rack and the linkage component. According to the multifunctional integrated actuator assembly, structure is reasonable, arrangement is compact, the driving force can be well transmitted through the first connecting piece and the second connecting piece, yawing forces caused by the fact that the forced direction of the first connecting piece and the second connecting piece is misaligned with the piston rod are avoided by means of the structure of the guide plate, the position of the integrated actuator assembly can be changed according to actual requirements, and operation of the actuator in an experiment environment in a special space and under a special temperature is avoided, and cost is low.