The invention discloses a production method of a strip steel splitting and drawing and straightening and recoiling and inspection unit. A splitting and trimming disk shear and separating rollers are additionally arranged on a strip steel splitting and drawing and straightening unit: the splitting and trimming disk shear and the first separating roller are arranged behind a correction outlet turning roller in sequence, and the second separating roller is arranged behind a sampling guide table; the separating rollers and the splitting and trimming disk shear which are additionally arranged are switched, so that a splitting and drawing and straightening and inspection process and a recoiling and drawing and straightening and inspection process are switched on one unit; and the splitting and drawing and straightening and inspection process and the recoiling and drawing and straightening and inspection process can be realized, and splitting, drawing and straightening, recoiling, inspection, trimming, oiling and the like are centralized on one unit, so that the functions of the unit are expanded, and the use ratio of the unit is increased.