Chronic diseases are quite prevalent and are associated with grave repercussions and considerable target organ dysfunction. Providing such patients with high-quality care can significantly lower their morbidity and mortality risk. Early disease detection, frequently when the patients are generally asymptomatic, is necessary for the provision of proper care that could reduce the chances of hazardous consequences and complications. The arrangement of care delivery with continuity of care has been shown to provide many health benefits. Numerous beneficial health outcomes have been linked to the continuity of care way of structuring the delivery of care. Continuity of care is defined as the process by which the patient and his or her physician care team work together to manage their ongoing medical care in order to achieve the shared purpose of high-quality, affordable healthcare. Additionally, continuity of care is associated with increased follow-up appointment compliance, more frequent cancer screenings, prevention programs usage, fewer emergency room visits, less hospital admissions, among various others. The continuity of care is influenced by a variety of factors, including equity and effectiveness as well as the quality of care throughout time. Research studies have shown that greater treatment continuity is associated with better mental health, a greater sense of satisfaction, and a higher quality of life. Although, the overuse of medical resources, especially through the provision of unnecessary services, is associated with poor continuity of care. The purpose of this research is to review the available information about the effect of continuity of care on chronic diseases.