Abstract: Analysis of controlling silicon content for low carbon and low silicon steel had been conducted from various aspects in this paper.Thermodynamics calculation results indicates that when in low-carbon and low Silicon steel and responding balanced silicon is,which implies that silicon pick-up is inevitable.Controlling the thickness of slag ≤ 100 mm after converter tapping and deep deoxygenation of the converter are helpful for silicon controlling. Control of acid aluminum in converter outlet at around 300×10^-6,and aluminum control ≤ 600×10^-6in the refining process can greatly reduce the amount of silicon recovery.Increasing the basicity by adding additional lime is good for inhibiting SiO₂ reduction and reducing the presence of glass slag and dark green slag is conducive to reducing the amount of silicon pick-up.Both controlling gas flow during refining process and using the combination of lime,fluorite and aluminum wire can reduce silicon pick-up and reduce the influence of smelting time on silicon prick-up.