The invention discloses natural plant mosquito-repellent liquid, which comprises the following raw materials in parts by weight: 40-60 of eatable ethanol, 1-10 of dementholized peppermint oil, 1-6 of citionella oil, 3-12 of wintergreen oil, 3-12 of citriodora oil, 3-12 of blumea oil, 3-12 of lavender oil, 1-5 of menthol, and 3-12 of rosemary oil. The natural plant mosquito-repellent liquid disclosed by the invention is prepared by adding enough eatable ethanol into a stainless steel container at first, adding other enough raw materials into the eatable ethanol to stir uniformly, filtering and tinning after standing for one day, emptying, storing, inspecting a semi-finished product, sterilizing a wrappage, filling, inspecting a finished product, and warehousing. The natural plant mosquito-repellent liquid disclosed by the invention is formed by scientifically refining a plurality of plant extract substances; the effective time for repelling mosquito bite outdoors is up to six hours; and the natural plant mosquito-repellent liquid is very obvious in effect and free from toxic and side effects and stimulation on human body.