Abstract: TiN inclusions are one of the main reasons for wire breakage during drawing or twisting of C82DA cord steel. The 110 t BOF-LF-150 mm x 150 mm CC smelting process is used to produce C82DA steel. The research on the precipitation conditions of TiN, TiN inclusions can be reduced by decreasing the Ti and N content in molten steel. By means of controlling the amount of going down slag from converter, using alloys and slag materials with low titanium content, and controlling the amount of ladle residual slag, it can reduce the titanium content in molten steel. By shortening the BOF tapping time ≤4 min, maintaining the tap hole to avoid loose flow and trickle, optimizing the continuous casting nozzle, etc., it can reduce the nitrogen addition amount, Ti and N content of C82DA steel can be controlled to ≤ 2X10^-6 and ≤50 x 10^-6 respectively, to obviously decrease the TiN inclusions in steel.