Abstract: Ultrasound "acupuncture" uses two-dimensional phased arrays to focus acoustic energy at different depths under the skin and stimulate specific points to mimic the traditional acupuncture techniques. In this article, the focused sound field and deflected sound field of the designed ultrasonic acupuncture phased array at different focusing depths are simulated, and the statistical analysis of focusing areas is made. It is clear that the delayed focusing sound field of the designed phased array probe can meet the requirement of "needle shape" for ultrasonic "acupuncture". Based on sound field simulation, a simulation study of the sound field control mode of ultrasonic “acupuncture” is carried out. The results show that by controlling the up and down movement of focusing position and the deflection of focusing sound field, the change of lifting, insertion and entering angle in traditional acupuncture techniques can be mimicked, which provides a theoretical basis for the ultrasound “acupuncture” to further mimic the traditional acupuncture techniques.