Abstract: The present invention relates to the technical field of electronic communication, and specifically disclosed thereby are a master-slave configuration communication protocol, a method for improving compatibility and an electronic device. The master-slave configuration communication protocol comprises: electrically connecting one GPIO pin of a master configuration to at least one kind of slave configuration; the master configuration sending a mock address to the slave configuration through the GPIO pin; and the slave configuration receiving the mock address and comparing the mock address with its native address, if the mock address matches the native address, the slave configuration sends its parameter information to the master configuration.