Provided are an ultrasound contrast imaging method and apparatus. The method comprises: an initial step (S101), acquiring N frames of original contrast images a projection imaging step (S103), projecting on the N frames of original contrast images to obtain a projection result image of the N frames of original contrast images, wherein for an nth frame of original contrast image, any frame of an nth group of original contrast images is used as a projection template for projecting on the nth group of original contrast images to acquire a projection result image of the nth frame of original contrast image, the nth group of original contrast images is within a projection period and comprises several frames of original contrast images of the nth frame of original contrast image, and the projection period is smaller than an imaging period and a showing and storing step (S105), showing or storing the projection result image of the N frames of original contrast images. In the method, the projection period is a fixed value, accumulated errors caused by a projection process are only related to the projection period, and cannot increase as the imaging period increases, so that images continuously projected onto a template can better reflect spatial information, such as a filling and regression state of a micro vessel, of test subject in a current projection period.Linvention concerne un procédé et un appareil dimagerie par contraste ultrasonore. Le procédé comprend : une étape initiale (S101) consistant à acquérir N images de contraste dorigine une étape dimagerie par projection (S103) consistant à projeter les N images de contraste dorigine de manière à obtenir une image de projection résultante des N images de contraste dorigine dans laquelle, pour une nième image de contraste dorigine, toute image dun nième groupe dimages de contraste dorigine est utilisée comme matrice de projection à projeter sur le nième groupe dimages de contraste dorigine pour acquérir une image de pr
