The present invention relates to the field of smart chip technology, and specifically to a multi-in-one smart chip, comprising a power protection module, a program storage area, a speech recognition technology module, an MCU expansion interface, a main MCU operation control core, an infrared function module, a flash memory area, a 2.4G ordinary radio frequency signal transceiver module, a zigbee protocol transceiver processing unit, a Bluetooth protocol communication processing unit, a wifi protocol communication processing unit, a 2.4G antenna selection switch, a 2.4G frequency antenna module, a main MCU system clock oscillation circuit, a 5G frequency antenna module, and a 5G signal processing unit. The MCU integrates various input and output technologies into one, greatly improving the integration of intelligent devices and providing a technical foundation for the miniaturization of intelligent products.