Three-degree-of-freedom active and passive anti-micro-vibration base

The utility model provides a three-degree-of-freedom active and passive anti-micro-vibration base, which comprises a top plate, vibration reduction devices and a base, the bottoms of the vibration reduction devices are connected with the base through supporting seats, the tops of the vibration reduction devices are connected with the bottom of the top plate through connecting seats, the number of the vibration reduction devices is three, and the supporting seats and the connecting seats are distributed in a regular triangle shape. The vibration reduction device comprises a shell, a push rod is perpendicularly inserted into the top of the shell in a penetrating mode, a supporting block is connected to the top of the push rod, and pre-pressing springs are arranged between the outer side of the push rod and the supporting block and between the inner side of the top of the shell and the supporting block in a sleeving mode. A piezoelectric driver is installed between the bottom of the supporting block and the inne