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For the problem that IETM data can’t fully meet user needs in the integration data environment, it makes the IETM data module information as the sample data, combines with the query term expansion technology and Hopfield neural networks technology, calculates the field weight associated weight and distance weight between the inquiring words and election and expanding words, realizes the selection of query expansion terms scientifically and rationally, and presents a data retrieval method of equipment IETM based on the Hopfield neural network. In the experimental environment, it uses a certain type of tank IETM system to verify the proposed method; the results shows that the data query rate and precision rate of this method significantly higher than the traditional method.