Objective: To explore and analyze the application value of standardized nursing methods for diabetic patients in the community using community general care. Methods: A total of 80 patients with diabetes who were treated in our community from January 2022 to January 2025 were selected and randomly divided into a conventional group and an observation group according to the numerical grouping method. 40 patients using the conventional nursing model were named the conventional group, and 40 patients using the community general care model were named the observation group. The blood sugar levels, health knowledge cognitive levels, and patients’ quality of life scores of the two groups were compared before and after care. Results: Before nursing, there was no statistically significant difference in blood sugar levels between the two groups of patients, p > 0.05; after different nursing methods were applied to the two groups of patients, the blood sugar levels of the patients in the observation group were significantly lower than those in the conventional group. decreased, p < 0.05; the health knowledge cognitive score of the patients in the observation group was significantly improved compared with the patients in the conventional group, p < 0.05; the quality-of-life score of the patients in the observation group was significantly improved compared with the patients in the conventional group, p < 0.05. Conclusion: Judging from the research results, the application of community general nursing has improved patients’ blood sugar levels to a great extent, improved patients’ awareness of health knowledge, and also improved patients’ quality of life. It has definite application effects and is worthy of promotion and application in clinical practice.