The present invention relates to a low-intensity focused ultrasonic blasting system guided by ultrahigh-field magnetic resonance, including a 9.4 T magnetic resonance device and a low- intensity focused ultrasonic blasting device； the 9.4 T magnetic resonance device includes a main 5 magnet, a small animal bed, a magnetic resonance coil and a monitor, the low-intensity focused ultrasonic blasting device includes an ultrasonic transducer, an ultrasonic nerve stimulator and a fixing device capable of enabling the ultrasonic transducer to perform fixed-point blasting. The device provided by the present invention allows a fixed-point blasting position of an ultrasonic transducer not to be limited by an upper part of a small animal bed and a space in a magnetic 10 resonance coil, has a less interference to a magnetic resonance device, and exerts the effect of a magnetic resonance imaging device fully, thus achieving a better blasting effect.
