The invention discloses a Redis-based time scale measurement data storage system and method used in an automatic power dispatching system. The system comprises a fore-stipulation processing module, a background data processing module, a real-time database, a Redis data submission module and a Redis database. The fore-stipulation processing module obtains transformer substation band time scale measurement data messages, obtains serial number, a source code value, telemetering generation time and data status bit of telemetering data from the messages and obtains an ID and a telemetering value of a telemetering object through conversion. The background data processing module sends a request for writing measurement data in a library, the ID and the telemetering value of the telemetering object, the telemetering generation time and the data status bit to the Redis data submission module, meanwhile the background data processing module writes the telemetering value and the data status bit into the real-time database. The Redis data submission module converts the received data into a key-value type data structure and writes the data into a Redis database. Rapid access of time scale measurement data in the automatic power dispatching system can be achieved.