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The data of operation and support of equipment are important basis of carrying out equipment scientific research. However,the related data are often lack of proper accumulation because of ill management,secret and too small sample. So the data are unable to meet the needs of actual research. In order to overcome the difficulty,methods of data generation are proposed. First,the data of operation and support of equipment will be divided into three categories on application characteristic:the simple data,the known rules data and the unknown rules data. Second,different generation strategies are applied to these three data categories. For the simple data and the known rules data,some commercial software or simple custom algorithms can be used for data generation; for the unknown rules data,mode injection or characteristic inheritance algorithms can be used. These data generation methods were practiced in one large design and development of equipment management information system,and the result shows availability and correctness of the methods.