Abstract: To ensure the normal proceeding of gas storage solution mining, it is necessary to monitor and analyze continuously all production performance data in the process of solution mining so as to identify the problems and take the corresponding measures in time. In this paper, the actual production performance data measured in the process of solution mining (e.g., displacement pressure, brine concentration and morphologic volume) and their theoretical values were compared. After the relationship of the difference between actual values and theoretical values vs. oil blanket depth, tube spacing and insoluble fluff coefficient was investigated, a set of methods which can discriminate whether solution mining parameters are abnormal according to production performance data was established. If the inner pipe drops in the process of solution mining, the actual oil blanket pressure is higher than the theoretical value and the actual brine concentration is lower than the theoretical value. If the oil blanket moves upward, its actual pressure is lower than the theoretical value and the actual brine concentration is higher than the theoretical value. This method was verified based on sonar measurement data combined with production cases. It plays an instructive role in analyzing whether the solution mining process is in line with the design program or not.