Devices with multiple functions and methods for switching functions thereof are provided. The device comprises a plurality of hardware components, a plurality of functional modules, an input device, and a processing module. Each functional module corresponds to one of the functional connecting configurations for the hardware components. The processing module executes one of the functional modules and drives the hardware components according to the functional connecting configuration corresponding to the executed functional module. The processing module determines whether to generate a switch command according to an input command received by the input device. When the switch command is generated, the processing module directly terminates the functional module being currently executed and adjusts to execute another functional module, and drives the hardware components according to the functional connecting configuration corresponding to the functional module to be executed.