Characteristics of Gut Microbiota in Patients With Colon Cancer of Different Traditional Chinese Medicine Syndromes

Inclusion Criteria: 1. Preoperative abdominal CT, colonoscopy and pathological examination were diagnosed as colorectal malignant tumor patients; 2. Having surgical indications; 3. Patients who were not treated with antibiotics or microbiological agents one week before surgery; 4. Patients who had not received radiotherapy and chemotherapy before surgery; 5. Patients or their legal representatives informed and agreed to participate in this clinical trial and signed a written informed consent; Exclusion Criteria: 1. Have other cancer history; 2. Patients who have received invasive treatment within the past three months; 3. Inflammatory bowel disease such as ulcerative colitis or crohn's disease; 4. Combined with intestinal obstruction or intestinal perforation for emergency surgery; 5. Psychiatric history, can not join and standardize the completion of clinical investigators; 6. Pregnant or nursing women; 7. Patients treated with antibiotics or microbiological agents one week before surgery; 8. People have incomplete data;