The invention relates to an intelligent mower system and an intelligent mowing method thereof. The intelligent mower system comprises a mower, a camera device arranged on the mower, sensors arranged on the mower, a boundary electronic fence and a charging station. In a mowing area defined by the boundary electronic fence, the intelligent mower finishes recognition of mowing conditions in a current local range, achieves intelligent mowing of a lawn in the area, and conducts shielding, boundary control and automatic return charging by using the camera device arranged on the mower and a mowing motor current detecting device and by integrating monocular vision technology and data of all the sensors. The method enables the intelligent mower to conduct different mowing actions according to conditions of lawn density and distribution and the like in the area, and therefore mowing efficiency is improved, service life of the intelligent mower is prolonged, energy consumption is saved, and independency of the mower is improved.