The invention relates to a parallel-type oval vibration turning device applicable to vertical type excircle machining, belonging to the technical fields of micro-nano and ultraprecise manufacturing and machining on optical elements made of difficult-to-machine materials. Two piezoelectric stacks are connected with a parallel integrated hinge base, two displacement measurement baffles are connected with the parallel integrated hinge base, capacitance displacement sensors are mounted on displacement sensor holders, the displacement sensor holders are mounted on the parallel integrated hinge base through tightening screws, and a diamond cutter is mounted on the front end of the parallel integrated hinge base through tightening screws. The parallel-type oval vibration turning device has the advantages that the structure is novel, the adopted parallel flexible hinge can eliminate the movement generated by driving, and in the spatial structure, the flexible hinges are symmetrically distributed, so that the mutual coupling motion is reduced, the counting process is simple, and accurate control is easily realized.