As shown in Table 1, the results of group comparison showed that BMI, high blood pressure, chronic bronchitis, smoking, diabetes, drinking, peptic ulcer, NACT, coagulation, operation way, anesthesia, operation time, the lymph node cleaning number, anastomosis way, anastomotic location, tumor location, and postoperative albumin were 17factors with statistical significance between the two groups (p < 0.05). This evidence concerns the gene ALB and Peptic ulcer.