The invention provides an opposed energy-saving stone crusher and an ore crushing method and belongs to the field of crushing equipment. The opposed energy-saving stone crusher comprises a conveyor (3) and is characterized in that two stone crushing clamping and impact devices (1) are arranged above the conveyor (3); a push mechanism for pushing the corresponding stone crushing clamping and impactdevice (1) to integrally move is arranged on one side of the stone crushing clamping and impact device (1); the two stone crushing clamping and impact devices (1) are perpendicular to each other; onestone crushing clamping and impact device (1) is arranged vertically, and the other stone crushing clamping and impact device (1) is arranged horizontally. According to the opposed energy-saving stone crusher, the stone crushing mode and structure of a traditional stone crusher are changed; the opposed energy-saving stone crusher conducts preliminary detection on crack conditions of stones through detection heads first and then feeds back the crack conditions to the subsequent stone crushing clamping and impact devices so that the stone crushing clamping and impact devices can conduct vibration impact on the stones in a targeted mode; in the impact process, the opposed energy-saving stone crusher collects sounds and vibration fed back by the stones to punch pins during operation constantly and conducts vibration impact on the stones to be impacted again, energy consumption is reduced, and the stone crushing efficiency is improved.