Sonodynamic therapy is a novel treatment for killing malignant tumors with sonic sensitizers and low-intensity ultrasound,which via ultrasonic mechanical stress,the effects of ultrasonic cavitation and the combined production of ultrasound and acoustic sensitizers produce reactive oxygen species induces apoptosis co-destructing target cells.Compared with traditional approaches for the treatment of malignancy,sonodynamic therapy has advantages of greater accuracy,deeper tissue penetration,better patient dependency,and less side effects.Ultrasound microsphere contrast agents can significantly enhance the effects of cavitation as synthetic cavitation nuclei,and precise regulation of the effects of cavitation is a key factor in improving the efficiency of sonodynamic therapy.The combination of ultrasonic microspheres and adjustable cavitation have broad prospects in the field of sonodynamic therapy for malignant tumors.