Legal basis: Article 11 of the Measures for the Administration of Security Training Institutions The validity period of the Security Training Permit is 5 years. If it is necessary to extend the validity period, the safety training institution shall go through the license extension formalities at the issuing authority within 3 months before the expiration of the validity period. The issuing authority shall conduct an examination in accordance with these measures, and extend the time limit for those who meet the conditions; Do not meet the conditions, no extension, and explain the reasons.