Soyabean is economically important crop and known for their exceptional nutritional value. Soybean purple seed stain is a prevalent disease that poses a considerable threat to soybean production worldwide. The disease progresses through the development of dark purple to black stains on soybean seeds, leading to substantial reductions in both yield and seed quality. This chapter focuses on the epidemiological aspects of soybean purple seed stain, exploring how the disease spreads within and between soybean fields. Identifying key factors contributing to its dissemination can aid in the development of targeted disease management strategies. Various factors, including weather conditions, agronomic practices, and seed transmission, influence the disease’s epidemiology and severity. It is important to understand the disease’s progression, timely detection, and effective management practices to mitigate losses due to this disease. Disease management strategies such as cultural practices, biological control, varietal resistance, chemical management are discussed. Overall, this chapter provides a comprehensive analysis of the symptomatology, epidemiology, and detection of the disease and briefly describes the conventional and modern trends in disease management practices.