Data backup method and device and computer readable storage medium

The invention provides a data backup method and device and a computer readable storage medium, relates to the technical field of backup, and can improve the security of file data to be backed up in a backup process. The method comprises the following steps: when a first device logs in a second device, the first device sends a target backup request to the second device; the target backup request is used for requesting to backup target data in second equipment, and the target backup request comprises a target transmission password; the first device receives first data from the second device, wherein the first data is data obtained by encrypting target data by the second device based on the target transmission password; and the first device decrypts the first data based on the target transmission password, and backs up target data obtained by decryption to a specified backup storage space. The embodiment of the invention is used in a data backup process. 本申请提供一种数据备份方法、装置及计算机可读存储介质，涉及备份技术领域，能够提高待备份的文件数据在备份过程中的安全性