In the early stage of female colon cancer, there is usually no obvious clinical manifestation, and it is easy to be confused with colitis and hemorrhoids, etc., so it is necessary to go to the hospital for professional examination. Early stage of female colon cancer usually does not have obvious symptoms, only some patients will have abdominal pain, diarrhea and blood in stool, which is similar to common gastrointestinal diseases and has no specificity, and because it is not easy to be found and diagnosed, it is easy to be neglected and confused, and professional colonoscopy and tumor marker tests are needed to help diagnose it. Only when female colon cancer progresses to middle and late stage with the tumor increasing in size, patients will have obvious clinical manifestations, such as abdominal mass, abnormal stool, anemia, emaciation and so on.