A business educational training is importance in the age of knowledge based economy. The purpose of this study is to explore the gap of interview’s expectations and satisfaction on the quality of service of an educational training program. The structure was proposed and questionnaire was design according to the PZB quality gap models. A survey was conducted in Taoyuan County with a total of 500 questionnaires and 412 valid questionnaires were returned. The gap analysis is to identify what is the significant gap between the expected service and perceived service. In this research, we found 31 elements of service quality with significant difference between service perceived expectation and service performance. The result of this research provides information to improve the service quality of business educational training program.