Constipation can cause many diseases, such as colitis, gastrointestinal dysfunction, nausea, vomiting, poor appetite, etc. It may lead to colon cancer. Because the stool contains bacteria and toxins, long-term constipation may cause gas-producing bacteria in the intestinal tract, producing large amounts of gas, and sometimes constipated patients are prone to farting, and the smell of farts is rather foul. Usually, gas-producing bacteria will secrete toxins and cause irritation to the colonic mucosa, which may become malignant irritation after a long time, resulting in colon polyps in the intestinal mucosa, and colon polyps will become colon cancer after malignant transformation, which is usually more common in clinical practice. It is recommended that once the symptoms appear, constipated patients should go to the hospital for examination in time to avoid delaying the condition.