The invention belongs to the technical field of compressors, and particularly relates to a phase difference real-time adjusting type three-level pressurizing zero-clearance type ionic liquid compressor. Ionic liquid is adopted in the ionic liquid compressor for generating high pressure, but, an existing ionic compressor adopts five-level compression, the structure is complex, machining is difficult, cost is high, the provided phase difference real-time adjusting type three-level pressurizing zero-clearance type ionic liquid compressor comprises a hydraulic mechanism and a gas pressurizing mechanism which are connected, the gas pressurizing mechanism comprises a first-level gas pressurizing assembly, a second-level gas pressurizing assembly and a third-level gas pressurizing assembly, the first-level gas pressurizing assembly is connected with the hydraulic mechanism through a first reversing assembly, the second-level gas pressurizing assembly is connected with the hydraulic mechanismthrough a second reversing assembly, and the third-level gas pressurizing assembly is connected with the hydraulic mechanism through a third reversing assembly. The compressor is simple in structure,convenient to machine, high in control precision, low in energy consumption, zero in clearance volume, high in generality, free of pollution to hydrogen and low in cost.