The invention discloses a non-contact type overrun clutch, including an outer ring and an inner ring, wherein the outer ring is connected with an output shaft, the inner ring is connected with an input shaft, a wedge block is restrained on the working face of the outer ring by a spring to achieve unidirectional action; a baffle is installed on the end face of the outer ring for preventing the wedge block from displacing, an outer check ring separates a bearing from the wedge block, an oil cylinder and an oil pipe constitute a set of lubricating device, when in work, an oil pump pumps lubricating oil into the bottom of the wedge block to achieve no contact. The on-contact type overrun clutch has the advantages of being applicable to high-speed disconnection and connection of multi-drive occasions, greatly prolonged in service life through the hydraulic non-contact type design, avoiding frequent lubricating oil maintenance due to the built-in type hydraulic oil pump, and greatly prolonged in service life of the bearing and the wedge block.