The utility model relates to a detecting device for dual laterolog equipment, in particular to an analog scaling device for dual laterolog equipment, which comprises a scaling clip, an analog box, a PATCH switching box and a testing box which are connected through a testing lead, an output end of the scaling clip is connected with the analog box, and an output end of the PATCH switching box is respectively connected with the analog box and the testing box. The analog scaling device for the dual laterolog equipment is more applicable to linear check for the equipment in laboratories or fields and provides a testing point for checking operating state of the equipment, and the analog scaling device has the advantages of convenience to carry, simplicity in operation and accuracy in scaling.