Fuente: Wipo "BigData" The invention discloses a database operation abnormal behavior detection method and a readable storage medium, and the detection method comprises the following steps: S01) analyzing, converting and collecting database audit log data; s02) detecting abnormal points by using an LOF algorithm; s03) detecting database operation abnormal behaviors by adopting a quartile algorithm; and S04) in combination with the anomaly detection results of the LOF algorithm and the quartile algorithm, output anomaly is detected in a combined manner, and a final database operation anomaly behavior detection result is obtained. According to the database operation abnormal behavior detection method and the readable storage medium provided by the invention, the operation speed and accuracy can be well considered, and the detection efficiency of high-dimensional big data is improved.