Ca724 belongs to the tumor marker of gastrointestinal tract, to determine whether there is any problem or not, it needs to be combined with other tumor markers and imaging tests for diagnosis. High Ca724 alone may be due to pancreatic cancer, cholangiocarcinoma, gallbladder cancer, colon cancer, rectal cancer, gastric cancer and other diseases caused by certain inflammatory lesions can also lead to high ca724, for example, acute pancreatitis, cholestatic cholangitis, acute hepatitis, cholelithiasis, cirrhosis of the liver and other diseases. After the initial diagnosis of the disease, it can be combined with other tumor markers for joint diagnosis, for example, combining Ca724 and CEA examination, people with elevated Ca724 and CEA should be highly alert to the occurrence of gastric cancer, because the combination of the two for the diagnosis of gastric cancer can be up to 85% of the compliance rate, which is high, and then can also be through the gastroscopy, pathological biopsy and other examinations to further confirm the diagnosis of the disease.