With the change of global environment, the demand for some small languages is gradually decreasing, which leads to the specialty of small languages becoming a "sinkhole". This paper will discuss the reasons why minor language majors become "tiankeng" from the aspects of market demand, allocation of educational resources, employment prospects and enrollment plans.

1? Reduced market demand

With the popularization of Chinese, the number of foreigners learning Chinese is gradually decreasing, and it is more difficult for Chinese majors to find jobs, which leads to a gradual decrease in the market demand for minority language majors.

2? Uneven distribution of educational resources

Small language majors have high requirements, but some schools have unreasonable resource allocation, which leads to insufficient educational resources and affects professional development.

3? Vague employment prospects

The difficulty in employment and low salary of minority language majors lead to students and parents' hesitation in choosing and vague employment prospects, which further affects the development of minority language majors.

4? There are too many enrollment plans

Some universities or projects attract too many students, which leads to the decline of teaching quality and the increase of employment pressure, further aggravating the "sinkhole" phenomenon of small language majors.