Liquid-ink marking pen

The utility model relates to a liquid ink marking pen which comprises a pen rod, a pen holder, a wrapping core, a fiber pen head and a pen cap, and also comprises a valve and a valve push rod which are arranged in the pen rod, wherein the valve comprises a valve body and a valve plug, the middle of the valve body is provided with a passage, and the periphery of the passage is provided with a fixing sleeve; the inside of a longitudinal hole of a rod head of the valve push rod is inserted with the valve plug, and the rod head, a spring and the valve plug are inserted in the passage in the middle of the valve body; the pen rod is a cavity body which is used for containing liquid ink, the pen holder is arranged in a front cavity of the pen rod, and a back cap is sheathed on an elastic sealing cap of the back cavity of the pen rod; the back cap is pressed to open the valve plug to inject the liquid ink into the wrapping core through the valve push rod. The utility model can prolong the storage time and ensure that the liquid ink in the pen is smooth, and the writing is fluent.