The Administrative Aptitude Test (AAT) mainly measures the basic qualities and ability factors closely related to civil servants' occupation, which are suitable for objective paper-and-pencil tests, including speech comprehension and expression, quantitative relations, judgment and reasoning, data analysis and common sense judgment.

Application is one of the subjects of Chinese mainland civil servant qualification examination. The contents of the national civil service examination include: administrative professional aptitude test (administrative ability test), application and related professional knowledge. The word "trial theory" is taken from the meaning of "trial theory" in Sikuquanshu, which means statement, defense, discussion and demonstration. Its basic requirement is to summarize a material, usually social events, civil disputes, etc. , explain and state the materials and events, on this basis, give pertinent opinions and put forward the overall scheme of demonstration. It requires an accurate grasp of some objective facts or materials and necessary explanations and statements.