GCDF (Global Career Development Mentor) is the abbreviation of international career development mentor, and it is a kind of professional qualification certification. The duty and task of GCDF is to be a career development instructor and consultant for visitors. Their duties include helping visitors understand their professional interests, values and talents, providing career advice and guidance, helping them set career goals and formulate corresponding career development plans. GCDF is also responsible for providing career development resources and information, helping visitors explore different career fields and employment opportunities, providing personal development training and skills upgrading suggestions, and supporting the challenges and difficulties faced by visitors in their career development. In a word, the task of GCDF is to help visitors make wise decisions in their career development and provide necessary support and guidance.