The application discloses a high dynamic range image acquisition method and device, and equipment. The method comprises the following steps: acquiring a first frame picture currently displayed by an image sensor as a normal exposed image after receiving a high dynamic range image acquisition instruction, and setting a first exposure compensation value; after switching the first frame picture displayed by the image sensor into a second frame picture, setting a second exposure compensation value, wherein the second exposure compensation value is different from the first exposure compensation value; orderly collecting a third frame picture and a fourth frame picture displayed by the image sensor; performing fusion processing on the first frame picture, the third frame picture and the fourth frame picture to generate the high dynamic range image. Through the acquisition method disclosed by the application, the acquisition speed of the high dynamic range image is improved, the waiting timeis reduced, and the use experience of the user is improved.