The invention discloses a tundish low oxygen station control method and device applied to the technical field of continuous casting. The method comprises the steps that after baking of a tundish at abaking station is finished, the tundish is started so as to introduce argon into the tundish with first flow; within the time period that the tundish is transported to a casting station from the baking station, and the time period from the time that the tundish receives molten steel from a steel ladle at the casting station to tundish casting starting, it is kept that argon is introduced into thetundish in the manner with the first flow; and during tundish casting starting, argon is introduced into the tundish in the manner of adjusting the first flow to second flow smaller than the first flow; in the process that the tundish casts the molten steel to a crystallizer, a covering agent is added into the tundish, and it is kept that argon is introduced into the tundish with the second flow;and after adding of the covering agent into the tundish is finished, argon is stopped from being introduced into the tundish. According to the method and device, the technical problems that the cleanliness of liquid steel head furnace molten steel and the casting blank quality are not high are solved.