The invention discloses a list management method, device, system and a computer readable storage medium. The method includes steps of determining a client mark corresponding to a first list after receiving the first list; judging whether a second list carrying the client mark is stored in the storage or not; creating a corresponding to-be-allocated task according to the first list if the second list carrying the client mark is not stored; detecting whether the second list has corresponding active tasks or not if the second list carrying the client mark is stored; and performing the active taskif the second list has the corresponding active task. According to the invention, after the list is received, whether the list of the client corresponding to the received list is in presence in the system or not is judged in advance, so that a condition of list accumulation in the system when one client has multiple tasks is avoided.