Career circle refers to the contacts and social networks involved in a person's career development. By colleagues, bosses, subordinates, industry peers, partners, customers and so on. The establishment and expansion of professional circle is very important for personal career development. Through professional circles, people can get information, support and resources, find suitable job opportunities, and enhance their personal popularity and influence. The establishment of professional circle needs to actively participate in various social activities, such as industry conferences, seminars, vocational training, social media and so on. By establishing contacts with people with different backgrounds and experiences and expanding their professional circles, individuals can be helped to develop and succeed better in the workplace.