The utility model discloses an electric test platform of insulating drainage line, including workstation and earth connection, be equipped with experimental wire support on the workstation, on the workstation of experimental wire support one side on the workstation linear array have drainage line support, drainage wire sleeve comprises demountable part and fixed portion, complete drainage wire sleeve is constituteed to demountable part and fixed portion block, drainage wire sleeve's fixed portion arranges in on the drainage line support, drainage wire sleeve is arranged in to the drainage line, the both ends of drainage line are fixed respectively in two anchor clamps, anchor clamps one end is the high tension lead end, be equipped with the ground lead end on drainage wire sleeve's the demountable part, connect the ground wire on it. The utility model discloses can carry out electric prophylactic test to insulating drainage line, in time the insulating defect of the insulating drainage line of discovery is ensured safe in utilizationly.