Aim: Cardiovascular diseases are the leading cause of mortality and morbidity in diabetes mellitus (DM), and diabetes as a metabolic disorder is considered an equivalent of cardiovascular diseases. The treatment of dyslipidemia is very important in diabetic patients, and statins are recommended to achieve target low-density lipoprotein cholesterol (LDL-C) levels. In this study, we investigated the rates of statin use and the rate of reaching LDL-C levels in diabetic patients admitted to a tertiary health center. Material and Method: The study included 210 patients with DM who presented to the cardiology outpatient clinic within 3 months. Target LDL-C level was defined as; <70 mg/dL in patients with a history of CVD, patients with microvascular and macrovascular complications secondary to DM, patients over the age of 40 with one or more cardiovascular risk factors, or as <100 mg/dL in patients without additional risk factors or target organ damage. Results: The mean age of the patients was 53.8±15.1 and 64.3% (n=135) were female. When patients without statin treatment (n=140) were examined, 83.6% (n=117) of the patients were not at the target LDL-C level. Also 87.1% (n=61) of statin users did not reach the target LDL-C levels. Of these patients, 1.4% (n=1) were under low intensity, 87.1% (n=61) were under moderate intensity and 11.4% (n=8) were under high intensity statin treatment. Conclusion: Our study showed that the target LDL-C levels were not reached in the majority of diabetic patients. This situation is caused by the fact that the drug was not prescribed by the doctors sufficiently, the treatment is not regulated according to the LDL-C levels, and the patients did not use the treatment regularly. As a result of the study, it was seen that the importance of statin treatment should be explained to the individuals.