A portable device and a manipulation method are disclosed. The portable device includes a camera unit, a first sensor and a control module. The camera unit has a plurality of functional modes. The functional modes include a photo-capturing mode and a video-recording mode. The first sensor is disposed on the portable device and configured for sensing a manipulation input. The manipulation input has a manipulation pattern and duration information of the manipulation pattern. The control module is coupled with the camera unit and the first sensor. The control module is configured for selecting one of the functional modes corresponding to the manipulation pattern and the duration information sensed by the first sensor, and triggering the camera unit into the selected functional mode.