The invention discloses a formula and a preparation method of a mosquito-repellent liquid capable of repelling mosquitoes, killing
bacteria and purifying air. The mosquito-repellent liquid comprises the following raw materials in parts by weight: 0.5-28 parts of
glucoside, 12 to 40 parts of
ethanol, 0.12 to 20 parts of an
eucalyptus extract, 0.12 to 20 parts of citronella extract and 46 to 89 parts of
distilled water; or 0.5 to 28 parts of Tween 20-100, 12 to 40 parts of
ethanol, 0.12 to 20 parts of the
eucalyptus extract, 0.12 to 20 parts of
Melaleuca alternifolia extract, 0.12 to 20 parts ofcitronella extract and 46-89 parts of
distilled water. The mosquito-repellent liquid provided by the invention has remarkable mosquito repellent effect and is safe and
pollution-free; a
eucalyptus isrich in aromatic oil, has killing or repelling effect on various germs and pests, and can be made into insecticides, preservatives, mosquito-repellent oil and the like; and in addition, a certain
bactericidal effect is achieved, and the breeding and spreading of
pathogenic bacteria carried by mosquitoes can be reduced. The mosquito-repellent liquid is prepared from
plant essential oil, does not contain artificially synthesized essence, preservatives and chemical pigments, smells pleasant and is beneficial to physical and
psychological health. The components of the mosquito-repellent liquid are
environmentally friendly and low in cost, and the mosquito-repellent liquid produces good social, ecological and
economic benefits.