Electric port module and Serdes interface switching method thereof

The invention discloses an electric port module and a Serdes interface switching method thereof. The electric port module comprises a PHY chip and an MCU. The PHY chip includes a first register. The first register is used for storing first and second register values. The first register value is used for identifying that the Serdes interface state is disconnected, and the second register value is used for identifying that the Serdes interface state is connected. The MCU is configured to periodically read a register value used for identifying a Serdes interface state; and when the first register value is read, the Serdes interface configuration instruction is sent to the PHY chip again so as to switch the Serdes interface type of the PHY chip. And periodically reading the register value in the first register, and re-sending the Serdes interface configuration instruction to the PHY chip so as to switch the Serdes interface type, so that the Serdes interface type of the PHY chip is the same as the Serdes interfac