The invention pertaining to the field of a low-carbon structural steel rolling and cooling control technology provides a method of improving a pipeline-steel drop hammer performance. The invention is characterized in that the temperature of a heating furnace is controlled in 1160-1200 DEG C for heating pipeline steel feed, original austenite grains are thinned, at the same time, the pass strain rate is enlarged in the rough rolling stage and is assured between 15% and 30%, dynamic recrystallization of austenite grains can be better generated, steel plates are cooled to a temperature of 450 DEG C -550 DEG C by adopting a fast cooling method with a cooling speed of 15-30 DEG C/s, water cooling function can be fully exerted, phase-change tissue is thinned and the steel plate drop hammer performance can be improved. According to the invention, the existing rolling and cooling control technology is optimized under the precondition that the chemical composition of the existing pipeline steel is not changed, functions of the rolling and cooling control technology are fully exerted and the drop stamp performance of pipeline steel is greatly improved.