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91.13%。 The ether extracting technology of carya kernel oil was experimentally studied in this work. The result showed that a high extraction rate could be achieved when the ratio of solution／material was higher than 4 mL/g，operating temperatures ranged from 55 to 65℃ and the duration of extraction was 2.5 h. On basis of single factor experiment，the orthogonal trial was used in optimization of technological parameters，the optimum technological condition was 5 mL/g，2.5 h and 65℃，under which the extraction rate could be high as 98.17%. Physicochemical properties of the oil are as follows: the iodine value is 92.20 g/100 g; the refractive index n201.471 0, density d200.905 6 and the acid value 750 mg/g. The unsaturated fatty acid in the oil was 91.51%，the oleic acid and the linoleic acid was both 91.13% determined by the gas chromatography-mass spectroscopy(GC-MS).