Rotating mechanism and multi-degree-of-freedom testing device

The utility model belongs to the technical field of lens testing, and discloses a rotating mechanism and a multi-degree-of-freedom testing device, and the rotating mechanism comprises a motor, a mounting rack, a guide rod, a pressing assembly, a first spring, a locking assembly, and an unlocking member. Before the to-be-tested object is placed on the mounting rack, the pressing and attaching assembly and the locking and attaching assembly are in an unlocking state, after the to-be-tested object is placed on the mounting rack, the pressing and attaching assembly is pushed to the to-be-tested object and the to-be-tested object is pressed on the mounting rack, and at the moment, the pressing and attaching assembly is locked by the locking and attaching assembly so as to ensure that the pressing and attaching assembly can stably press the to-be-tested object; in the process of pushing the pressing and attaching assembly to the to-be-detected object, the guide rod guides the pressing and attaching assembly, and th