A portable camera having a lens assembly switching mechanism is provided. The portable camera includes a camera main body, a camera module, a slab module and a coupling structure. The camera main body has a camera opening formed in a first surface thereof. The camera module is disposed within the camera main body and includes a lens assembly exposed through the camera opening. The slab module is used for carrying one or more selective lens assemblies with different shooting angles. The coupling structure is disposed between the first surface of camera main body and the camera module. The slab module is movable with respect to the coupling structure while the slab module is parallel with the first surface of the camera main body, so that one of the selective lens assemblies is aligned with the camera opening for providing an adjustable shooting angle.