This study reports an investigative study with 55 English-major participants in a Chinese university about using simulation in business English correspondence teaching. The study found that participants had strong needs in practical skills development and learning business English correspondence writing. The simulation approach was perceived to be effective and had positive learning outcomes in business communication skills development, motivation, confidence and vocabulary growth, business and language knowledge improvement, and more understanding about the business practice. The constraint factors in simulation included lack of business knowledge and vocabulary, ineffective group cooperation, and lack of understanding about the real-world business background.