The invention belongs to the technical field of access, addressing or distribution in memory systems or system architectures, and discloses an environment monitoring data safety storage system and method for trusted cloud. Each user is corresponding to one con_ckb, and the con_ckbs are the conkeys of all containers created by the users. For the index of the conckb, the user needs to provide one user password User_key, and the user password User_key serves as a root node of a binary tree structure. Child nodes are sequentially generated downards from the root node in a derived manner, and a Hash algorithm SHA-256 is employed in the derivation process for calculating the left and right subnodes. The Hash value of a p-th layer is obtained as the index of con_key_box_slices. The system and method achieve a prototype system of a safety mechanism. The system and method make the most of the computing and energy storage capabilities of a cloud system and greatly improve the use convenience fora user, and the user does not need to perform the encryption and does not need to depend on a fixed client for encryption and decryption.