Abstract：Based on the research in ultrasound CT image principle, the authors explored the array detection method. By improving the layout of sensors, the amount of data required for imaging increased. Due to the least squared criterion, the formula of simultaneous iterative reconstruction techniques was deduced. The matrix of the coefficient correlation was obtained through algorithm for scanning four edges. The velocity matrix had been achieved through correcting error to approach the real data constantly. The result of simulation shows that the method can reduce error effectively, and the effect of image reconstruction is satisfactory.