The invention discloses a configurable module substation load branch detection method and device. The method comprises: configuring all detection modules and to-be-detected branches according to theirquantity, order and enabling state; according to the detection module order and its corresponding to-be-detected branch order, sequentially retrieving configuration information, and determining whether the sequence number and the enabling state in the configuration information of the current to-be-detected branch are valid, until all detections are completed; if the configuration information of the current to-be-detected branch is a valid serial number and enabling state, storing the current to-be-detected branch into a database for detection and management; otherwise, recording configurationinformation errors and prompting or updating the configuration information of the current to-be-detected branch. The flexibility of a substation branch load detection system is effectively improved,a mode of shielding bad branch detection units in the module can be adopted, and the problem of branch detection malposition or module waste is effectively solved.