The invention relates to the field of metallurgy coking, particularly to a coking technical method. A coke oven used in the method adopts a wide carbonization chamber, and the width of the carbonization chamber is 620mm. The wide carbonization chamber used in the method and the heating level can cause the yield of coke to be increased, and the shrinking percentage and the intensity of the coke are improved. The sealed wall of a heat storage chamber and the position of the oven head of a chute are made of compound thermal insulation materials, floating bead bricks are paved at the oven bottom of the coke oven, so that the tightness of the heat storage chamber and the chute can be improved.