The invention discloses a method and system for monitoring collecting devices based on real-timely collected data. The method comprises the steps that the real-timely collected data of the collectingdevices are obtained; the real-timely collected data of the collecting devices are preprocessed in collecting nodes through a data preprocessing module, operation states of the collecting devices arepreliminarily judged, and the preprocessed real-timely collected data are sent to a data analyzing module; the data analyzing module receives the preprocessed real-timely collected data sent by the collecting devices at all the collecting nodes, and the data analyzing module utilizes a signal analyzing technology to judge the preprocessed real-timely collected data of all the collecting nodes; when it is judged that the collecting devices break down, an intelligent collecting knowledge base system distinguishes the breakdown type, and a breakdown diagnosis method is matched according to the distinguished breakdown type; and a breakdown repairing method of the collecting devices is determined according to the breakdown diagnosis method.