Long-term inflammation is indeed one of the high-risk factors leading to cancer, and will result in a higher risk of cancer than normal, so it is important to treat inflammation aggressively when symptoms related to inflammation are present and diagnosed, to avoid the long-term presence of inflammation in the body. Although inflammation plays an important role in tumorigenesis, development, invasion, and metastasis, it is not the only factor. Long-term inflammation is an important biological feature of malignant tumors, and 15%-20% of malignant tumors are caused by infections and uncontrolled inflammation, such as inflammatory bowel disease is associated with colon cancer, HBV infection is associated with hepatocellular carcinoma, EBV infection can cause nasopharyngeal carcinoma, and HPV viral infection can cause cervical cancer or lymphoma. The presence of a large number of inflammatory factors in the tumor microenvironment not only amplifies the inflammatory effect, but also promotes tumor cell growth and metastasis, and promotes the generation of tumor blood vessels and lymphatic vessels. In addition, not all long-term inflammation is a tumor predisposing factor, for example, Helicobacter pylori can increase the risk of gastric cancer, but has a protective effect on esophageal and cardia adenocarcinoma. Arthritis and psoriasis are immune inflammatory diseases, but unlike the inflammatory bowel disease of immune enteritis, these two do not have a tumor-promoting effect.