Various studies reported the influencing factors related to malnutrition in diabetics, including body mass index (BMI),4, 12, 13, 14, 15, 16, 17, 18 albumin (ALB),3, 4, 12, 17, 19, 20 triglyceride (TG),12, 21, 22, 23 C‐reactive protein (CRP),24, 25, 26 >10 mg/L, age,3, 4, 17, 20, 23 duration of diabetes,20, 23 smoking,18, 25 gender,27, 28, 29 lower education level,29, 30 and others. The gene discussed is CRP; the disease is nutritional deficiency disease.