The invention relates to the field of aramid fiber honeycombs, and particularly relates to a device for preventing gumming and deformation of aramid fiber honeycombs. The device comprises an open box body, wherein at least one side plate body of the box body has a detachable structure, the box body is made of hard materials, the box body covers one end of the blank area of the honeycombs, and resin can be effectively prevented from splashing to the blank area so as to well protect the blank area of the honeycombs. In addition, the box body made of hard materials is not easily deformed and cannot extrude honeycombs, and can play a role in shaping a tool, and the device is low in cost, good in effect, and capable of effectively preventing the honeycombs from being deformed during gumming process.