The invention discloses a data management method. To-be-managed data comprises task information, a learning packet and a student account. A data topological structure records the association relationship between the task information and the learning packet, and the data topological structure also records the association relationship between the learning packet and the student account which completes the learning packet learning system. If the first task information can be in topological connection with the first student account through one learning packet, it is considered that a secondary connection exists between the first task information and the first student account; and association degree sorting is performed on the student accounts having the second-level connection with the first task information according to the second-level connection number. Through the data management method, the task information, the learning packages and the student accounts can be effectively managed, the sorting function is provided, the student accounts matched with different task information can be optimized, and students who learn the related learning packages and have the most related skills areselected for executable tasks.