A system and method for CT image reconstruction are provided. The method may include: obtaining raw data set related to an object； generating a first image set based on the raw data set, wherein the first image set includes a first full quality image and a first max field of view image； generating one or more reference images based on the first max field of view image； generating a first bone information image based on the one or more reference images； generating a second image set based on the raw data set, wherein the second image set includes a second full quality image； generating a second bone information image based on the one or more reference images； correcting hardening beam artifact of the second full quality image based on the second bone information image to generate a hardening beam artifact corrected image.
