The achievement of badminton athletes at the international level is a complex result of various factors involving physical, technical, tactical, and psychological aspects, as well as environmental support. This study used a systematic review approach to understand the key factors that contribute to badminton athlete achievement. The purpose of this study was to detail and analyze the existing literature to identify the key factors that are significant in improving the performance of badminton athletes at the international level. The selection of articles was done through a thorough search in several significant databases, with strict inclusion criteria to ensure the relevance and quality of the research. Two independent researchers conducted the article selection process to minimize bias. Once the articles were selected, data analysis was undertaken to describe and categorize the key factors identified. The results of this systematic review revealed that physical factors such as general physical condition, strength, explosive power, flexibility, and speed significantly impact badminton athletes' performance. In addition, technical and tactical aspects, such as basic techniques, game tactics, and doubles, also play a crucial role. Psychological characteristics, including motivation, stress management, concentration, and social support, are also factors that cannot be ignored in achieving optimal performance. By detailing these key factors, this study provides an in-depth insight into the complexity of the determinants of badminton athletes' performance at the international level. The implications of these findings provide a basis for coaches and researchers to develop more effective and focused training strategies and stimulate further research to understand the interactions between these factors deeply. Thus, the results of this systematic review can make an essential contribution to the development of the world of training and coaching badminton athletes.