Kras positivity indicates that the gene has been activated to mutate and is capable of causing cells to become cancerous. The K-Ras gene is a member of the Ras gene family and is a gene that exists in the human body under normal conditions. Under normal conditions, it is harmless to human cells, but when the body’s environment changes or is affected by external cancer-causing factors, the gene can be activated and mutated to cause cell cancer. K-Ras is the most frequently mutated gene in the Ras family, and the mutation can be detected in about 30% of tumors, which is commonly found in gastric, intestinal, pancreatic and other digestive tumors, as well as lung, bladder, ovarian, and breast cancers, etc. The presence of K-Ras mutation is often indicative of a poor prognosis and shorter survival period of the patients. Targeted drugs for K-Ras mutation are available. Tips: When a genetic mutation is detected by examination, you should actively follow your doctor’s advice, make a clear diagnosis as early as possible, and actively treat it.