A two-stage hundred-microsecond pulse focused ultrasound tissue destruction method, comprising: 1) positioning a target tissue of a sample (9) by using a monitoring guidance system, and adjusting a position of the target tissue to a focal point of an HIFU transducer (5); 2) a first stage destruction: forming loose local tissue structures by means of a shock wave excited by a hundred-microsecond pulse focused ultrasound, as well as boiling air bubbles and inertial cavitation generated thereby; 3) a second stage destruction: further mechanically crushing and homogenizing the tissues in a damaged area by means of a pulse focused ultrasound having a hundred-microsecond length, so as to achieve tissue destruction. The method takes full advantage of the following features: a pulse having a relatively high duty cycle exhibits both thermal and mechanical effects, while a pulse having a low duty cycle exhibits good mechanical effects. By controlling a high-intensity ultrasound sequence in which two stages are generated consecutively, a single pulse of which lasts one hundred microseconds, and which has a pulse having a relatively high duty cycle and a low duty ratio to act on a target tissue, highly efficient tissue destruction may be achieved.
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