The present invention discloses an automatic housing fitting device for double row conical bearings, and belongs to the technical field of bearing manufacturing. The automatic housing fitting device comprises a conveyor line. An inner component reversing mechanism, a feed blocking unit, an automatic housing assembling unit, an automatic standard spacer assembling unit, an automatic inner component assembling unit and a clearance detecting unit are disposed on the conveyor line. A port of a housing loading line is located at a front end of the automatic housing assembling unit. The automatic housing fitting device for double row conical bearings has the following advantages: the inner component reversing mechanism is utilized to automatically reverse inner components instead of manual work, and therefore, the amount of labor is reduced and the working efficiency is improved; the automatic assembling units are utilized to achieve automatic assembling of bearings with improved assembly efficiency; and a clearance measuring unit is utilized for clearance detection, followed by automatic calculation of a fitted middle spacer size according to a measurement result, and therefore, more accurate assembly of the middle spacer is achieved.