Scalable portable intelligent equipment based on USB bus technology

The invention provides scalable portable intelligent equipment based on a USB bus technology. The scalable portable intelligent equipment comprises a first module and a second module, both have a USB host function, wherein the first module is a main body module for providing a power supply and a cascade interface; the second module comprises two downlink interfaces and an uplink interface, wherein the downlink interfaces and the uplink interface are extended from an USB-HUB chip; the uplink interface is used to cascade the USB host of the first module; one of the downlink interfaces is used for connecting a function module of the second module; the function module communicates with the USB host of the first module to exchange data according to a USB protocol; the other downlink interface is used for expanding the USB cascade interface of the next level. The scalable portable intelligent equipment based on the USB bus technology has the advantages that the first module can link with a plurality of functional s