Introduction: Unfortunately, despite the breakthroughs in medical sciences, the incidence of diabetes, which is a common disease in human communities, has not only not decreased but also been increasing daily. Method: The present study was conducted by searching Farsi and English databases including Science Direct, Google Scholar, SID, Magiran, and PubMed with the key words "sleep", "sleep quality", and "diabetes". At first, numerous studies related to sleep quality, diabetes and sleep quality, and the sleep-related problems in diabetic patients were found. Result: Factors such as weight management, physical activity, and diet have always been mentioned as the foundation of diabetes prevention and control. Nowadays, the importance of good sleep and its relationship with the incidence and intensification of diabetes has also been well-established . The diabetic patients' lifestyle is one of the most important factors whose modification can improve the results of healthcare measures in these patients. Beside, exercising and physical activity, sleep and rest are important components of lifestyle in diabetic patients and are like the two sides of the same coin. Conclusion: Diabetic patients show some degrees of pain and anxiety for different reasons, including disease, regularly controlling blood sugar, and continual insulin injection, etc. It can concluded that relieving pain and reducing anxiety is an important factor in improving the quality of sleep in diabetic patients.