<p>The complex geotechnical environment in deep areas characterized by “high ground temperature, high ground stress, high osmotic pressure, and strong disturbances” often results in difficulties in hard rock fracturing and frequent occurrences of high-frequency, high-intensity disasters. Therefore, this paper adopts the perspective of a novel microwave-assisted fracturing technology for hard rock, focusing on both the weakening of hard rock through microwave-induced fracturing and the feasibility of high-energy disaster prevention and control. The results indicate: In the uniaxial mode, as the duration of microwave irradiation extends, the proportion of crack damage stress decreases from the initial 85% to about 66%. Although the reduction in the proportion of crack damage stress is somewhat limited under the triaxial mode, it generally decreases with the increase in microwave irradiation duration and increases with the rise in confining pressure. Energy analysis indicates that microwave-induced fracturing helps weaken the internal elastic energy storage level of hard rock, for instance, in the uniaxial mode, it reduces from 0.265–0.275 to 0.13–0.16&#xa0;J/cm³ after 120&#xa0;s, and the brittleness index based on energy decreases from the initial 0.90 to about 0.76. The findings are expected to accelerate the engineering application of microwave-assisted fracturing technology in hard rock.</p>