The invention relates to a marking tool, which comprises a marking pen tip, and an ink storing cavity, wherein, the marking pen tip is used for leading the
marking ink liquid to be coated on a surface, and the ink storing cavity is used for providing the
marking ink liquid for the marking pen tip. The marking tool is characterized in that an ink containing device with an absorbing capacity, at least an additional ink container which is filled with the
marking ink liquid, and at least an opening device are also included, wherein, the ink containing device is at least partially arranged in the ink storing cavity, the opening device is used for opening the marking ink liquid in the additional ink container, so as to lead the marking ink liquid in the additional ink container to be communicated with the marking pen tip, and to provide the marking ink liquid for the marking pen tip. When the marking pen tip requires the marking ink liquid, or the ink containing device needs the marking ink liquid to provide writing (
coating) for the marking pen tip, or the original marking ink liquid contained in the ink containing device is used up by the marking pen tip for writing (
coating) or has a small amount of residue, at least one opening device opens the marking ink liquid in at least an additional ink container, so as to lead the making ink liquid to be communicated with the marking pen tip, and to lead the marking pen tip to obtain or continuously obtain the marking ink liquid, therefore the ink storing amount is increased, the writing time is prolonged, simultaneously, the ink liquid leakage phenomenon can be effectively prevented and avoided.