A method for detecting optical fibre connection, characterized by comprising steps of: a single board judging whether received connection information of a downstream single board, received connection information of an upstream single board and connection information of the single board are reported current optical fibre connection relationship information; and if the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board are not the reported current optical fibre connection relationship information, reporting the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board to a network management system, wherein the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board reported are as the current optical fibre connection relationship information; the network management system generating optical fibre matching connection relationship information of all single boards which are currently installed according to actual installation condition of the single boards, and determining whether the reported current optical fibre connection relationship information is correct optical fibre connection relationship according to the optical fibre matching connection relationship information; and if it is determined that the reported current optical fibre connection relationship information is the correct optical fibre connection relationship, the network management system marking information corresponding to the current optical fibre connection relationship information in the optical fibre matching connection relationship information, and displaying the current optical fibre connection relationship information; otherwise, the network management system prompting that the current optical fibre connection relationship information is wrong optical fibre connection relationship, and displaying an optimal optical fibre connection relationship information. a single board judging whether received connection information of a downstream single board, received connection information of an upstream single board and connection information of the single board are reported current optical fibre connection relationship information; and if the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board are not the reported current optical fibre connection relationship information, reporting the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board to a network management system, wherein the received connection information of the downstream single board, the received connection information of the upstream single board and the connection information of the single board reported are as the current optical fibre connection relationship information; the network management system generating optical fibre matching connection relationship information of all single boards which are currently installed according to actual installation condition of the single boards, and determining whether the reported current optical fibre connection relationship information is correct optical fibre connection relationship according to the optical fibre matching connection relationship information; and if it is determined that the reported current optical fibre connection relationship information is the correct optical fibre connection relationship, the network management system marking information corresponding to the current optical fibre connection relationship information in the optical fibre matching connection relationship information, and displaying the current optical fibre connection relationship information; otherwise, the network management system prompting that the current optical fibre connection relationship information is wrong optical fibre connection relationship, and displaying an optimal optical fibre connection relationship information.