Abstract: In order to improve the matter flow control level of the iron/steel interface, based on the theory of metallurgical process engineering, an operational control technique of torpedo ladles was summarized with torpedo ladles of A steel plant in China as the object of study. This study included five contents:operation process analysis, operation time analysis, calculating method of employed torpedo ladles, two evaluating indicators for the operational control level, and operation optimization. Satisfactory effects are obtained after applying the technique in production. The turnover number of torpedo ladles decreases from 22 to 18, the cycling rate increases by 0.5, the continuation degree coefficients increase by 0.09 for BF 1 and 0.08 for BF 2, respectively.