The utility model discloses a LPC interface visit device, notebook computer based on platform of soaring. Open device is including soaring CPU and EC, and the CPU that wherein soars includes the LPC interface, and EC includes keyboard controller, super IO, power management passageway and port address processing unit, wherein: soar CPU's LPC interface for to EC's IO port visit, parallel read -write operation, port address processing unit for the IO port address that can visit EC's IO port address resolution for the CPU's that soars LPC interface, keyboard controller for through port address processing unit, go on alternately with the CPU that soars, superIO, port address processing unit is through realizing the visit to power management passageway to super IO read and write operations, power management passageway is handled afterwards through port address processing unit and super IO, carries out the information interaction with the CPU's that soars LPC interface. Can solve soar CPU and EC's communication problem, not need the incremental cost and research and develop engineer's work load.