Abstract:Abstract: Objective?To investigate the impact of nutritional risk on the short-term outcomes of laparoscopic surgery in patients with colon cancer.?Methods?The clinical data of 60 patients with colon cancer from January 2015 to January 2018 were retrospectively analyzed. All the patients were successfully treated with laparoscopic-assisted radical resection. The patients were divided into the risk group (n?=?17, nutrition risk score ≥?3) and risk-free group (n?=?43, nutrition risk score <3) according to whether the patients had nutritional risk. The clinical efficacy, complications and immune function were compared between the two groups.?Results?The total effective rates of the patients in the risk group and non-risk group were 76.48% and 86.06%, respectively, and those in the risk group were lower than those in the non-risk group. The total complication rates in the risk group and the risk-free group were 23.52% and 13.93% The risk group was higher than the risk-free group, the difference was statistically significant (P?0.05). There was no significant difference in the proportion of CD8+ between the two groups (P?>?0.05). Patients in the risk group had lower rates of CD3+, CD4+ and CD4+/CD8+ than those in the non-at risk group, with a higher proportion of CD4+ CD25+ than that in the non-risk group (P?0.05).?Conclusion?Nutritional risk will reduce the immune function of colon cancer patients, increase the incidence of complications, affecting clinical efficacy, and therefore should be actively given in clinical nutrition support before surgery to improve clinical efficacy.