The rolling characteristics of three-strands slitting technology were analyzed. For the difficulties in material shape control and problems of steel-heaping accidents during three-strand slitting rolling process, measures were adopted, such as, optimizing of main frame 15,16,17,18 pass; regulating console speed adjustment operation, enhancing standard operation of mill assembly and adjustment works, improving process facilities of the guide for the finishing mill, the conveyors, water lines. All the measures effectively reduced the adjustment difficulties, steel heaping accident and significantly improved the output, material yield, operation rate, and other indicators.