Embodiments of the present application provide an object pose detection method and apparatus, a computer device, and a storage medium. The method comprises: obtaining image data, the image data comprising a target object; inputting the image data into a two-dimensional detection model, and detecting two-dimensional first pose information when a three-dimensional bounding box is projected to the image data, the bounding box being used for detecting the target object; mapping the first pose information into three-dimensional second pose information; and detecting third pose information of the target object according to the second pose information.