Auditors need to attend training before they can take the exam. The specific conditions are as follows:

1. Training and learning: Attend the "three-system" national registered auditor training course organized by training institutions recognized by CNCA, and learn relevant knowledge and auditing skills of ISO 900 1, ISO 1400 1 and ISO 4500 1 respectively.

2. Examination certification: complete the training and pass the corresponding examination. The examination includes written examination and interview, which involves the understanding of management system standards, auditing knowledge, skills and practical experience. After passing the exam, you need to apply to become an intern auditor of China Certification and Accreditation Association.