An ultrasonic imaging method, system, and device. The method comprises: S501. pre-configuring an imaging area, then pre-configuring multiple focusing points for receiving an ultrasonic wave and a delay time for an emitter array element corresponding to the focusing point, wherein the focusing point is disposed below of the imaging area S502. activating, according to the delay time corresponding to the focusing point, an emitter array element of the ultrasonic probe, and emitting, by means of a focusing method, and using an aperture with a diameter 30-100% of the width of the probe, an ultrasonic wave towards the focusing point S503. determining an overlapping portion of an imaging area sampling point and an effective emitter sound field S504. calculating a scattering intensity of the imaging area sampling point containing the effective emitter sound field to obtain a reconstructed secondary image corresponding to the focusing point and S505. overlapping, according to a pixel position, the reconstructed secondary image obtained after a plurality of emissions to generate an image. The method improves an image frame rate and provides an ultrasonic image with a minimum of two ultrasonic wave emissions. The method also reduces a speckle size by overlapping secondary images reconstructed using different focusing points, thereby improving image resolution.Linvention concerne un procédé, un système et un dispositif dimagerie ultrasonore. Le procédé comprend les étapes suivantes : S501. la pré-configuration dune zone dimagerie, puis la pré-configuration de multiples points de focalisation pour recevoir une onde ultrasonore et un temps de retard pour un élément de réseau émetteur correspondant au point de focalisation, le point de focalisation étant disposé au-dessous de la zone dimagerie S502. lactivation, selon le temps de retard correspondant au point de focalisation, dun élément de réseau émetteur de la sonde ultrasonore, et lémission, au moyen dun procédé de focalisatio
