The professionalization of the tour guide includes professional quality, professional behavior and professional ability. Part-time tour guide is the new force of the guide team. Their professional development has become the protection of the normal development of the tourism industry ，which contributes to the improvement of the service quality of the overall tour guide, and promote the healthy and sustainable development of tourism. It is necessary to explore the barriers to part-time tour guide in the process of professionalization and take measures to improve the professional level of part-time tour guide.