One of the goals to the technical and vocational education is for the industry to breed the talent persons. For reaching this purpose, Internship - the course was designed to practice training for the theory learning. The major purposes of this research were those: 1. To explore the influence on the relationship between the internship¡¦s circumstance and the professional commitment. 2. The mediating effects of the internship¡¦s experience satisfaction and self-efficacy, and follow that, the influences to the professional commitment. The results indicated that: the relationship between the internship¡¦s circumstance, internship¡¦s experience satisfaction, self-efficacy and professional commitment have the positively relations; the assumption about the affects between the internship¡¦s circumstance, internship¡¦s experience satisfaction, self-efficacy and professional commitment have some been supported; both the internship¡¦s experience satisfaction and self-efficacy positively affect the professional commitment and have the mediating effect. The results show that: the internship¡¦s experience satisfaction and self-efficacy are the important parts on the relationship between the internship¡¦s circumstance and professional commitment. Follow those results, the study suggests that the hospitality industry could do the job redesigned and breed the senior official that could support the students to improve the students¡¦ internship experience satisfaction; by the other way, it suggests the colleges should help the students to do the prepareing before leaving for the hotel to take the internship and assemble the students between the period of their internship to know the opinions about that and assist them to improve the internship¡¦s experience satisfaction and students¡¦ self-efficacy.