Abstract: To solve the problems of aging and low vigor of Platycladus orientalis seeds, this study used P. orientalis seeds subjected to artificial accelerated aging via high-temperature andhigh-humidity methods. Germination indices of P. orientalis seeds under different aging durati-ons were measured. Aged seeds (4 days) were then treated with microwave at three power l-evels (300 W, 500 W, 600 W; denoted as W3, W5, W6) and four exposure times (10 s, 20 s, 40 s, 60 s; denoted as T1, T2, T4, T6). The following parameters were evaluated: germin-ation percentage, relative electrical conductivity, malondialdehyde (MDA) content, soluble sug-ar (SS) content, soluble protein (SP) content, superoxide dismutase (SOD) activity, peroxidase (POD) activity, and adenosine triphosphate (ATP) content. A comprehensive evaluation of diff-erent microwave treatments was conducted using the membership function method. The resultsshowed that after aging treatment, the germination percentage, germination potential, germinati-on index, and vigor index of P. orientalis seeds significantly decreased. The germination perc-entage of seeds aged for 4 days declined from 86.67% to 69.67%. As microwave power and exposure duration increased, the germination percentage, antioxidant enzyme activities, reserve nutrient content, and ATP levels of aged P. orientalis seeds exhibited an initial increase follo-wed by a subsequent decrease. Conversely, relative electrical conductivity and malondialdehyde(MDA) content demonstrated an initial decline followed by a rise. Among all treatments, the 300 W for 40 s (W3T4) protocol significantly enhanced germination percentage, antioxidant e-nzyme activities, reserve nutrients, and ATP content compared to the control, while simultane-ously reducing relative electrical conductivity and MDA levels. Prolonged exposure to high-p-ower microwave treatment (W6T6) exerted inhibitory effects on seed germination.Comprehensi-ve analysis indicated that appropriate microwave treatment promotes the germination of aged P. orientalis seeds, with the 300 W 40 s (W3T4) treatment demonstrating the most effective results.