The invention discloses a hydraulic element durability comprehensive test-bed and test method for an excavator and relates to the technical field of engineering mechanical equipment. The hydraulic element durability comprehensive test-bed for the excavator comprises a test platform, hydraulic oil source units, frequency conversion drive units, hydraulic loading units, an auxiliary oil source unit, a motor impact test rack, a motor performance test-bed body and measurement control systems. By adoption of the technical scheme of the hydraulic element durability comprehensive test-bed and test method, modular design is adopted for the test-bed, different test systems can be established and combined flexibly and efficiently according to difference in test contents, and a tested element can be subjected to single-action or compound-action durability tests according to actual working conditions and actual load characteristics of the excavator. The whole test-bed has the advantages of being small in occupied area, powerful in function, flexible and efficient and the like.