The invention discloses a method for implementing integrated transmission of polymorphic data between master and slave stations of a power system. The method comprises the following steps: a power dispatching automation master station system and a slave station terminal establish a management connection and a data connection; step 2, the master station system obtains a CFG-1 configuration file ofthe slave station terminal; step 3, the master station system edits the CFG-1 configuration file of the slave station terminal, and selects steady state and dynamic data required for the master station to form a CFG-2 configuration file; step 4, the power dispatching automation master station system issues the CFG-2 configuration file to the slave station through the management connection; step 5,the power dispatching automation master station system sends a real-time data transmission command to the slave station terminal through the data connection; step 6, the slave station uploads the steady state and dynamic data to the master station according to the recently received CFG-2 configuration file; and step 7, the power dispatching automation master station system collects real-time datareceived by an application and sends the steady state and dynamic data to a background application for processing and displaying.