Personnel file is a very important work in enterprise management, which contains important information such as employees' personal information, work experience and training records. Therefore, the custody of personnel files is very important, and it is necessary to abide by relevant laws and regulations, and at the same time ensure their safety and confidentiality.

Generally speaking, the storage of personnel files can be divided into physical files and electronic files. Physical files include employees' paper files and related certificates, such as ID cards and academic certificates. Electronic file refers to storing the relevant information of employees in electronic form in a computer or server.

For the preservation of physical files, it is generally necessary to set up a special archives room or filing cabinet within the enterprise to classify, sort out and number the files to ensure the integrity and accuracy of the files. At the same time, it is necessary to formulate a file management system, standardize the process of consulting, borrowing and returning files, and avoid the loss or disclosure of files.

For the storage of electronic files, it is generally necessary to establish a special electronic file management system within the enterprise to classify, sort out and back up employees' personal information, work experience and training records. At the same time, it is necessary to strengthen the security protection of electronic files and take effective measures to prevent electronic files from being illegally obtained or tampered with.

In addition, some important personnel files, such as employees' labor contracts and payslips, need to be backed up and stored in different places to prevent files from being lost or damaged by accidents.

In short, the custody of personnel files needs to comply with relevant laws and regulations, and at the same time, it is necessary to formulate corresponding management systems and safety protection measures to ensure the integrity, accuracy and safety of files.