Aim: This study aimed to determine the level of perception of insulin and diabetes symptom management of patients with Type 2 diabetes who received inpatient treatment in intensive care. 
 Materials and Methods: This study was conducted in the Internal Medicine and Anesthesia Intensive Care units of a state hospital during the period of December 01, 2020 and March 31, 2021. The sample of the study was composed of 100 voluntary patients who used insulin. Research data were collected via the Patient Introduction Form, Diabetes Self-Management Questionnaire and the Insulin Treatment Appraisal Scale. Written permission was obtained from ethics committee and patients. 
 Results: The average age of the patients was 44.57 ± 14.8, 52% were female, 72% were single, 47% were primary school graduates, and 52% had a chronic complication related to diabetes. The mean time duration for being diagnosed with diabetes was 20.59 ± 12.87 years (3-52) while the mean duration of insulin use was 2.8 ± 1.17 years. Patients’ ITAS positive and negative item subscale mean scores were 11.44 ± 3.43 and 48.18 ± 12.09, respectively. Patients’ mean Diabetes Self-Management Questionnaire total score was 4.07 ± 1.74 (range: 0.62-8.75).
 Conclusion: Patients have a high negative perception towards insulin use and their diabetes self-management is below the average. There was a high level of negative correlation between patients’ negative insulin perception and glucose management and diet control sub-dimensions of their diabetes self-management.