The invention discloses a non-contact sealing oil inlet ring of a composite dynamic pressure bearing of a hydraulic clutch, and belongs to the technical field of radial sealing. The non-contact sealing oil inlet ring comprises two sets of clutch shaft cooling connectors, a clutch high-pressure oil inlet connector, an oil inlet ring cooling connector, two sets of oil seals, an oil inlet ring body,an oil return connector, a clutch body, two sets of bearings, a supporting frame, two sets of oil seal locating sleeves, two sets of oil seal covers, a bearing bush and an abrasion-resistant alloy coating. The clutch shaft cooling connector and the oil inlet ring cooling connector continuously supply oil, the oil supply state of the clutch high-pressure oil inlet connector is simply utilized for controlling the clutch body to be engaged and disengaged, the oil return connector is connected back to a hydraulic station oil tank, a hydraulic loop of the clutch body achieves circulation at this moment, and the problems that a radial oil inlet connector is large in sealing heat value, a bearing is worn and burnt to death, leakage is likely to happen, demounting and mounting are hard, and the bearing can hardly be used for a large-size high-PV value hydraulic clutch are solved. The device works in cooperation with a hydraulic system, the cost is low, pollution is avoided, demounting and mounting are convenient, and safety and reliability are achieved.