The invention provides a split-type cutting gate base. The cutting gate base comprises a base body, and the base body is connected with a cutting machine and a cutting gate separately; a cutter body is detachably connected to the top of the base body, and a cutting edge of the cutter body is close to a lower-row chain of the cutting machine. The cutting gate base is designed to be two split bodies, one split body is the base body used for being connected with the cutting machine and the cutting gate, the other split body is the cutter body which is easily damaged, and after the cutting edge ofthe cutter body is worn out by the lower-row chain, the cutter body can be directly disassembled for replacement without replacing the base body, so that there is no need to adjust the installation precision of the cutting gate after replacement, the replacement time is greatly shortened, and the production efficiency is improved; in addition, compared with the whole cutting gate base, the cutterbody is small in size, few raw materials are correspondingly consumed, the cost is saved conveniently, and the cutter body is more economical and environmentally friendly.