Implementations of the present invention provide a method, an apparatus, and a system for generating a medical combination image, and a storage medium. The method includes: obtaining a medical image generated by performing medical imaging on a to-be-imaged object by using a medical imaging system; obtaining a three-dimensional image generated by photographing the to-be-imaged object by using a photographing assembly; generating, based on the three-dimensional image, a two-dimensional image of the to-be-imaged object being transformed to be at a predetermined angle; and generating a medical combination image including the medical image and the two-dimensional image. The medical combination image not only includes the medical image generated by imaging, but also includes the two-dimensional image transformed from the photographed three-dimensional image. The medical combination image enriches information content, and facilitates mastering of more information of the to-be-imaged object in multiple dimensions by a viewer. The medical combination image further includes tag information, thereby having a prompt effect with a distinctive feature, and not interfering presentation of the to-be-imaged object.