ObjectiveTo 
investigate their compliance with postoperative oral nutritional supplementation and nutritional outcomes.MethodsA total of 84 patients with colorectal cancer surgery with NRS-2002 risk score ≥ 3 who were treated with oral nutritional supplementation were selected and divided into control and observation groups according to the random number table method, with 42 cases in each group. The control group received conventional oral nutritional supplementation and dietary nutrition education; the observation group established a nutrition intervention group based on the Goal Attainment Theory and carried out individualized nutrition education based on the Goal Attainment Theory. The nutritional indicators at 1 day postoperative, 7 days postoperative, oral nutritional supplementation adherence scores at 7 and 14 days postoperative, and the attainment rate of trans-oral nutritional intake at 21 days postoperative were compared between the 2 groups of patients.ResultsThere was no statistically significant difference between the nutritional status indexes of the 2 groups of patients before the intervention,p> 0.05; when comparing the prealbumin of the 2 groups of patients at 7 days postoperatively, the prealbumin level of the patients in the observation group at 7 days postoperatively (200.25 ± 53.25) was better than that of the control group (165.73 ± 43.00), with apvalue of 0.002, and the difference was statistically significant (p< 0.05). Comparison of oral nutritional supplementation adherence scores at 7 and 14 days postoperatively showed that ONS treatment adherence scores were better than those of the control group, with statistically significant differences (p< 0.05). When comparing the attainment rate of oral nutritional intake at 21 days after surgery, the difference was statistically significant (p< 0.05).ConclusionNutritional education based on the Goal Attainment Theory can effectively improve the adherence to oral nutritional supplementation therapy and protein intake attainment rate of colorectal cancer patients after surgery and effectively improve the nutritional status of patients.