The invention relates to a pulverized coal pyrolysis furnace with variable-angle equal-division structures. The pyrolysis furnace mainly comprises a furnace body, radiation pipes and the equal-division structures, wherein multiple layers of the radiation pipes are arranged in a furnace cavity, empty space zones are formed, and an angled cap is arranged above each radiation pipe; the equal-divisionstructures are arranged in the empty space zones and comprise dividing caps, and the included angles between the angled caps and the dividing caps are increased layer by layer from top to bottom. Bymeans of variable angle design, the falling speed of the pulverized coal material is well controlled, and the equal-division effect on the material is enhanced; scouring and abrasion to the radiationpipes, the angled caps and the dividing caps in the material falling process are reduced overall, and accordingly, the service life of the radiation pipes, the angled caps and the dividing caps is prolonged, retention time of the powder passing through the lower radiation pipes is relatively prolonged, the heat exchange effect of the radiation pipes is enhanced, and the whole furnace body is heated more uniformly.