A one-centimeter nodule on the liver needs to be reviewed to find out the status of the nodule; if the imaging results suggest that the nodule is of a benign nature, then a puncture biopsy is needed, and if necessary, surgical treatment. 1. Review: If there is no clinical symptom and the previous examination result suggests that the nodule is benign in nature, regular review will help to understand the development of the nodule. 2. Puncture biopsy: If the results of liver and gallbladder CT scanning + enhancement suggest that the nature of the nodule is malignant, puncture biopsy can help to understand the nature of the nodule. 3. Surgery: If the imaging and puncture results suggest that the nodule is malignant, surgery is needed to remove the nodule or part of the liver to avoid further malignant changes. Therefore, if you find a one-centimeter nodule on your liver, you should go to the hospital to get a clear picture of the nature of the nodule and further treatment if necessary.