The invention provides a method for rapidly reading field replaceable unit (FRU) information. The method is applied to an equipment cabinet system containing a plurality of nodes. The method comprises that a detection unit is provided and is connected with the plurality of nodes; a chain table is preliminarily defined, and a time N of communication of the detection unit and a node is preset; communication parameters needed by N times of the communication are added into the chain table and carried out to obtain partial FRU information of the node; a communication time M needed by obtaining of all the FRU information of the node is calculated; and the communication parameters needed by (M-N) times of the communication between the detection unit and the node are added into the chain table and carried out to obtain the rest FRU information of the node. According to the method, the partial FRU information is obtained through presetting of the communication time of the detection unit and one node, and then the total FRU information is calculated and obtained through the partial FRU information. Therefore, the method improves the reading speed of the FRU information of the nodes, and can guarantee real-time performance of the FRU information of the nodes.