The invention discloses coke oven flue gas dry desulfurization and medium low temperature denitration technology. The technology includes desulfurization, dedusting, SCR system denitration, waste heatrecovery and other steps. A desulfurization system adopts a dry adsorbent for adsorption desulfurization. The dry adsorbent is a mixture of sodium bicarbonate and silicon dioxide or magnesium hydroxide. The dry adsorbent is powdery and has a fineness of D90<20 [mu]m to ensure that the absorbent has enough specific surface area to achieve high reactivity. During the desulfurization, the technologyof the invention adopts the dry adsorbent to absorb sulfides, and the dry desulfurization is simple in operation and small in construction cost. The dry adsorbent powder with specific fineness is used to ensure the complete adsorption of the sulfides, and the removal rate of the sulfides is more than 95%. After the desulfurization, dust is removed, then the denitration is carried out by the SCR denitration system, and the final nitrogen oxide removal rate is more than 88%.