The role of iophorol injection in medicine is as an angiographic agent, and this role is closely related to the physicochemical properties of iophorol. The molecular weight of iophorol is 807, which is a small molecule and can be excreted freely through the filtration membrane of kidney tubules without excessive retention in the body, making it relatively safe. The iodine content of iophorol injection is relatively high. After entering the body’s blood, the blood vessels containing iophorol injection will appear under X-ray irradiation because of the presence of iodine, which can absorb more rays and make them attenuate. Iophorol is a stable angiographic agent and is widely used in various angiograms, such as cerebrovascular, cardiovascular, kidney, liver, urinary tract and other internal tissues.