Since the opening of the financial market and the liberalization of the banking industry, the number of banks has increased dramatically, the banking industry is fiercely competitive, and performance has become the most important issue for companies. To achieve maximum performance, there must be outstanding leaders with leadership skills to lead, so that people can make the best use of their talents, so as to enhance mutual cooperation and further improve efficiency. The effectiveness of leadership may vary due to cultural differences and various conditions (gender, age, education, etc.). This study is based on leadership style theory to explore the relationship between leadership style, achievement motivation and job performance. The sample of research includes 498 employees of bank