The invention relates to a process method for producing low-carbon low-silicon steel through molten steel ladle refining in the technical field of metallurgy, particularly to a silicon control method of the low-carbon low-silicon steel. A requirement on control over the silicon content of the low-carbon low-silicon steel is met through producing processes of controlling converter smelting, washing discharged steel slag, producing white slag by LF refining, and continuously casting. Through the implementation of the silicon control method, the average silicon content is reduced from original 0.035% to 0.0213%; in production, through predesulfurization of molten iron, the final sulphur content of a converter is controlled below 0.020%, so that a slag baffling effect is optimized; through a measure that the refining time is controlled within 35 min, silicon increase of molten steel is reduced, the qualified rate of the silicon content reaches above 95.8%, the deliverability of a cold rolled material is improved, the quality of refined molten steel is ensured and improved, and the smelting cost is reduced.