Three months. The civil service examination is an employment examination organized by the competent department of civil servants to recruit the first-level chief clerk and other civil servants below the equivalent rank. Two months before the announcement, the preparation training class will be held. It is best to do the test yourself and listen to the class meeting. National civil service examination subjects, provincial civil service examinations, and most provincial examination subjects; Generally speaking, the civil service examination training class should prepare for the exam for at least three months. The Civil Servant Law of People's Republic of China (PRC) stipulates that the first-level chief clerk and other civil servants below the equivalent rank shall be employed through public examination, strict inspection, equal competition and merit-based admission.