CET-4 and CET-6 are relatively simple and the examination fee is low. The requirements of TOEFL and IELTS are relatively higher, and the examination fee is also very high. Moreover, the IELTS certificate is only valid for 2 years, and it needs to be retaken after the deadline. TOEFL IELTS is used to go abroad, and the basic requirements of domestic schools are CET-4 and CET-6.

Ielts, mbth international English language testing system, is jointly managed by the Foreign Language Testing Department of Cambridge University Examinations Committee, the British Council and IDP Education Group. This is an English proficiency test for those who intend to study, work or settle in English-speaking countries.

IELTS is divided into two categories: academic and training, which are aimed at students who apply for studying abroad and those who plan to work or immigrate in English-speaking countries. The exam is divided into four parts: listening, speaking, reading and writing, with a total score of 9 points. TOEFL is an English proficiency test organized by educational testing service (ETS). Its full name is "English proficiency test for non-native English speakers" and its Chinese transliteration is "TOEFL".

There are three kinds of TOEFL, namely: PBT—-paper-based test 677 677, CBT—-computer test 300 300, ibt—-online test 120, and the new TOEFL score is 120. The TOEFL test is valid for two years, counting from the date of the test.