A three-dimensional imaging ultrasonic scanning method is applied to ultrasonic diagnostic instruments. The method comprises the following steps: S0, generating a high-frequency voltage pulse to drive a plurality of ultrasonic arrays and power a spatial locator to put the spatial location into service (S100)； S1, using the plurality of ultrasonic arrays to acquire different ultrasonic image information of a tested object (S101)； S2, using the spatial locator to acquire the positional information of the plurality of ultrasonic arrays (S102). The three-dimensional imaging ultrasonic scanning method can simultaneously satisfy different requirements for images during three-dimensional ultrasonic scanning, so that with just one scanning, a series of B-mode ultrasound images corresponding to each of the ultrasonic arrays can be obtained, and further three-dimensional images for the tested object can be constructed by a main body portion of ultrasonic diagnosis, laying a better foundation for ultrasonic diagnosis.
