ObjectiveTo develop altering intake managing symptoms (AIMS) dietary intervention and evaluate its effects on nutritional status and dietary compliance for patients after gastrectomy.MethodsFrom April 2017 to July 2018, 176 patients underwent the gastrectomy in the Xijing Hospital of Air Force Military Medical University were selected, then were divided into an AIMS group and a control group by the Excel 2007 random function method. The AIMS group was intervened by the AIMS dietary intervention, the control group was given the routine diet management. The body mass, body mass index (BMI), albumin, and dietary intake at the admission, on the 2nd week and the 3rd month after the discharge were compared between the two groups. The nutritional status of the two groups was assessed by the PG-SGA scale. The diet-related symptoms and dietary compliance of the two groups were assessed by the dietary related symptoms scale and the dietary compliance scale.ResultsA total of 176 eligible patients were enrolled in this study, including 92 patients in the AIMS group and 84 patients in the control group. There were no significant differences in the baseline data such as the gender, age, educational level, occupation, disease type, surgical method, tumor TNM stage, and pathological differentiated type between the two groups (P>0.050). There were no significant differences in the body mass, BMI, and albumin between the AIMS group and the control group before and after the dietary intervention (P>0.050). The PG-SGA score, diet-related symptom score, and dietary compliance score had significant differences between on the 2nd week or the 3rd month after the discharge and at the admission in the AIMS group and the control group (P<0.050), which had significant differences on the 2nd week or the 3rd month after the discharge between the AIMS group and the control group (P<0.001). The dietary intake of the AIMS group was significantly higher than that of the control group on the 3rd month after the discharge (P<0.001). The complications incidences of total diet-related symptoms was 5.5% (5/91) and 14.6% (12/82) in the AIMS group and the control group, respectively, the difference was statistically significant (P=0.047).ConclusionUsing AIMS dietary intervention for patients after radical gastrectomy can significantly improve their overall nutritional status and improve dietary compliance.