The smart document locker is a high-tech terminal device specifically designed for the management of entry and exit documents. It supports the mixed self-service retrieval of various entry and exit documents such as travel permits and passports. Its outstanding feature is that each document is equipped with a box-type protective device, providing comprehensive protection for document security. This device deeply integrates multiple cutting-edge technologies, A built-in facial recognition system accurately identifies the user's identity, combined with identity verification to ensure information accuracy; intelligent voice prompts provide real-time guidance to users, coupled with vivid animated interactive guidance, allowing even first-time users to quickly get started. Whether for document storage or retrieval, the operation process is extremely convenient, truly achieving automated document issuance. It also features invalid document detection and recycling functions, ensuring both rigor and efficiency. The system boasts a user-friendly interface with clear and concise human-computer interaction prompts. Utilizing multiple verification methods such as QR code scanning, ID card reading, facial liveness detection, and even fingerprint comparison, users can easily complete business operations in just a few simple steps, greatly facilitating document collection for the general public.