The invention relates to the technical field of sintering furnace equipment, in particular to a vertical sintering furnace convenient to clean. The vertical sintering furnace convenient to clean comprises a sintering furnace, a sealing ring set, a lower electrode, an upper electrode, a downward pressing mechanism, a cleaning mechanism, a water cooling mechanism, an air pressure control mechanism and a drainage mechanism. The sealing ring set is arranged at the top of the sintering furnace. The lower electrode is arranged in the sintering furnace, and a mold is arranged at the top of the lower electrode. A pressure head is arranged at the bottom of the upper electrode. The downward pressing mechanism is arranged on the side of the sintering furnace, and the upper electrode is arranged at the output end of the downward pressing mechanism. The cleaning mechanism is arranged at the bottom of the sintering furnace, the water cooling mechanism is arranged outside the sintering furnace, and the output end of the water cooling mechanism is located in the sintering furnace. The air pressure control mechanism is arranged outside the sintering furnace, and the output end of the air pressure control mechanism communicates with the interior of the sintering furnace. The drainage mechanism is arranged at the bottom of the sintering furnace, and the output end of the drainage mechanism communicates with the interior of the sintering furnace. According to the technical scheme, products can be sintered, the interior of the furnace can be rapidly cleaned in time, the cleaning time is shortened, and the production efficiency is improved.