The normal value of CA724 is usually between 0-6.7μg/L. CA724 is a glycoprotein antigen, which is mainly a tumor marker reflecting gastrointestinal tumors and ovarian tumors, if this value is within the normal range or a little higher than the normal range, it should have no clinical significance. CA724 can be found in ovarian cancer, colorectal cancer, gastric cancer, breast cancer and pancreatic cancer, etc. Therefore, if CA724 is found to be significantly elevated during physical examination, it is necessary to conduct corresponding examinations for these malignant tumors in order to find out the location of the tumor and then carry out targeted treatment.