The invention provides a multifunctional integrated actuator assembly. The multifunctional integrated actuator assembly comprises a rack, actuators, locking devices, piston rods, a first connecting piece and a second connecting piece, wherein the actuators are installed on the rack, the locking devices are used for adjusting the integrated actuator assembly and installed at the bottom of the rack, the piston rods are used for transmitting driving force and connected with guide plates, connecting parts are arranged at the tops of the guide plates, and the connecting parts are installed on the rack through guide shafts of the guide plates; and the first connecting piece and the second connecting piece are connected with the rack and the connecting parts respectively. According to the multifunctional integrated actuator assembly, the structure is reasonable, the arrangement is compact, the driving force can be transmitted through the first connecting piece and the second connecting piece, lateral force caused by uncoaxiality of forced direction of the first connecting piece and the second connecting piece with the piston rods is avoided by utilizing the guide plates, the position of the integrated actuator assembly can be changed as required, the actuators are prevented from working in testing environments with specific space and temperatures, and the cost is low.