Gallbladder polyps may cause elevated CEA. Malignant gallbladder polyps often cause elevated CEA, but elevated CEA is not only seen in patients with gallbladder polyps, but also in other diseases. Gallbladder polyp is a generalized term for a protruding or elevated lesion in the gallbladder cavity, including benign polyps and malignant polyps. When the gallbladder polyp is malignant, the CEA may be elevated, and the patient should undergo further examination in time to make a clear diagnosis. However, as a broad-spectrum tumor marker, CEA does not have specificity. Elevated CEA is not only found in patients with malignant gallbladder, but also in patients with colorectal cancer, gastric cancer, pancreatic cancer, lung cancer and breast cancer. In addition, elevated CEA can also be seen in patients with cirrhosis and intestinal polyps. Therefore, patients with elevated CEA in combination with gallbladder polyps should go to the hospital in time, complete the examination, and give targeted treatment in time after clarifying the cause of the disease to avoid further development of the disease.