The invention discloses a coal-gasifying and iron-making method and a coal-gasifying and iron-making gasifier, and relates to the technical field of iron making in order to solve the problem of low primary conversion rate of iron ores in coal gasification iron making. The method is characterized in that pulverized coal and a gasifying agent undergo a gasification reaction in a gasification zone inthe gasifier to generate synthetic gas including carbon monoxide and hydrogen, the synthetic gas and the iron ores undergo a redox reaction in an iron ore reduction zone in the gasifier to generate elemental iron, and an adjustment measure is adopted before the synthetic gas enters the iron ore reduction zone in order to make the sum of the volume percentages of the carbon monoxide and hydrogen in the synthetic gas entering the iron ore reduction zone greater than or equal to a preset value. The primary conversion rate of iron ores is increased in the invention.