The invention relates to a method for carrying out
coal gasification regionally by a
fixed bed. In the method, the middle upper part of a gas furnace is divided into two gasification regions by a partition wall; in the blowing phase, a blowing valve and a
nitrogen adding valve at the bottom of the gas furnace are opened, two
chimney valves at the middle upper part of the gas furnace are opened, other valves are closed, air enters the gas furnace to be burnt, the temperature of the gas furnace is raised, and generated blowing gas is sent to a post
station from the
chimney valves to be processed; in the gas preparation phase, the
nitrogen adding valve at the bottom of the gas furnace is opened, gas valves and steam valves in the two regions at the middle upper part of the gas furnace are opened and closed alternately, one region is used for conveying gas outside while the other region is used for conveying steam inwards simultaneously, and other valves are all closed; the air added with
nitrogen enters the gas furnace to be burnt, high temperature air gas is generated, and steam enters the furnace to react so as to generate high temperature
water gas; and two streams of high temperature gas are transversely and longitudinally mixed and flow in a
horizontal and vertical crossed mode between gasification
layers to continuously perform a gasification reaction and finally is output outwards through the regions where the gas valves are opened. The method has high steam resolution ratio, high gas
production rate, high gas quality, low carbon residue of slags and obvious effects of saving energy and reducing consumption.