When patients with rectal cancer develop intestinal obstruction and are not treated actively, their lives are usually at risk within two weeks. Bowel obstruction in rectal cancer can lead to the occurrence of infectious shock, and if the vital signs can be tolerated, timely surgery is needed as soon as possible. Without active treatment, life-threatening death usually occurs within two weeks. When the patient’s own basic condition is poor, gastrointestinal decompression, enterostomy, intravenous rehydration symptomatic treatment can be carried out. The patient’s life can be appropriately prolonged. When the basic condition of their own improvement must be timely surgical treatment, the obstruction site and the primary malignant tumor resection can make life prolonged. You can let the patient to the local hospital gastrointestinal surgery consultation, listen to the professional doctor’s advice treatment.