This is a single-centre, prospective, observational cohort study in which 69 patients with inflammatory bowel disease (IBD) were recruited to undergo 68Ga-grazytracer PET/CT imaging in patients with IBD to investigate the feasibility of early sensitive detection or prediction of the response to medication in patients with inflammatory bowel disease on 68Ga-grazytracer PET/CT and early prediction of the The feasibility of 68Ga-grazytracer PET/CT for early detection or prediction of response to drug therapy and early prediction of long-term prognosis in patients with inflammatory bowel disease.