Various embodiments provide methods, servers, and systems for processing task data. In an exemplary method, a task-data-processing request sent by a client can be received. The task-data-processing request can contain a type identifier of task data. The type identifier of the task data can include a daily-task-data identifier, a mainline-task-data identifier, a random-task-data identifier, or a combination thereof. The task data corresponding to the type identifier of the task data can be processed to generate processing results, according to the type identifier of the task data and a preset processing scheme corresponding to each type of the task data. The processing results can be returned to the client.