The utility model relates to a structure of coke oven length to gas flow distribution is adjusted on upper portion lower part in coordination, including setting up the lower part regulating plate structure in bottom flue top, regenerator bottom to and set up and to adjust the brick structure on the upper portion of ramp top, combustion chamber bottom, upper portion is adjusted the brick structure and is used for the coke oven length to the coarse adjusting of air current, is transferred knothole and is adjusted the brick by upper portion and constitutes, adjusts brick quantity or changes the regulation brick adjustment upper portion accent knothole airflow channel's of different models size through the plus -minus, lower part regulating plate structure is used for the coke oven length to the accurate adjustment of air current, transfers knothole and regulating plate to constitute by the lower part, adjusts lower part accent knothole airflow channel's size through the aperture in the hole on the adjustment regulating plate. The utility model discloses an upper portion is through adjusting the brick coarse adjusting, and the method of regulating plate accurate adjustment is passed through to the lower part, and the upper and lower coke oven length that realizes is in coordination adjusted to the accurate of heating homogeneity, and its simple structure easily realizes, the simple operation, and the effect is obvious.