The invention discloses a method for removing sulfur content of coal. The method comprises the steps that a, coal samples are dried to be in a dry air base state, and the coal samples are smashed; b, the smashed coal samples are evenly mixed with iron powder; c, the mixture of the coal and the iron powder is put into a reaction device, and heat treatment is conducted; d, the mixture of the coal and the iron powder which is subjected to heat treatment is cooled to be in a room temperature state; e, the cooled mixture of the coal and the iron powder is separated by adopting a magnetic separation method, and low-sulphur coal is obtained. The method for removing the sulfur content of the coal has the advantages that a chemical desulfurization method and a physical desulfurization method are combined organically, and the desulfurization efficiency is high; organic sulfur in the coal samples is reacted with the iron powder through a heat treatment method first, a product obtained after the reaction of the iron powder and the organic sulfur is separated from nonmagnetic coal through a physical method of dry magnetic separation, inorganic sulfur with magnetism in the coal is separated simultaneously, and therefore the low-sulphur coal products of which the organic sulfur and the inorganic sulfur in the coal are removed are obtained.