OBJECTIVE To study the nutritional status changes in elderly patients with right colon cancer before and after laparoscopic radical right hemicolectomy, so as to evaluate the necessity of nutritional support after surgery. Methods The clinical data for elderly patients who underwent laparoscopic radical right hemicolectomy were collected. The average protein intake, non-protein energy intake and nutritional support time; the serum nutrition items (TP, ALB, HGB; liver and renal function indicators) before and after surgery and the postoperative complications in all patients were recorded. The results are analyzed statistically. Results A total of 48 right colon cancer elderly patients undertook laparoscopic radical right hemicolectomy in the department of general surgery between October 2016 to October 2018 were selected for this study, 29 male, 19 female, aged 62~91 years old (77.2±11.9 years). Postoperative nutritional support were carried out for all patients for 3days. The average total protein intake were 0.83±0.42g/Kg/d; non-protein calorie intake was 20.18±2.07Kcal/Kg/d. The levels of TP, ALB, HGB were deceased at the postoperative day 1 compared with those before surgery (P<0.05). However, the levels of TP, ALB, HGB were increased at postoperative day 3 compared with those before surgery(P<0.05) and reached normal range at postoperative day 5. The postoperative complications included: pneumonia(2 cases), myocardial ischemia(5 cases), urine retention(3 cases) and all complications were cured with conservative treatment , no postoperative death. Conclusions This study showed that due to their decreased in digestive function, elderly patients suffered from right colon cancer had significant changes in the nutritional status after laparoscopic radical right hemicolectomy. It is necessary to implement postoperative nutritional support for elderly patients and their nutritional status can be improved significantly soon.