The invention discloses natural 
plant mosquito-repellent incense liquid and a preparation method thereof. The natural 
plant mosquito-repellent incense liquid comprises the following raw materials in percentage by 
mass: 3.6-6.5% of a mosquito-repellent 
drug, 2.5-4.2% of an additive, 20-50% of 
ethanol, and the balance of deionized water; the mosquito-repellent 
drug comprises following raw materials in parts by weight: 20-30 parts of folium artemisiae argyi leaves, 10-15 parts of mint, 5-12 parts of 
lavender, 3-9 parts of 
pericarpium citri reticulatae, 6-15 parts of 
garcinia mangostana, 5-15 parts of tobacco, 14-20 parts of tropic 
ageratum herb, 4-11 parts of folium mori, 3-10 parts of 
flos trollii, 2-10 parts of radix phytolaccae, 1-6 parts of ephedra oil, and 4-10 parts of fructus cormi; and the additive is prepared from herba epimedii, flatstem milkvetch seeds, and fructus schizandrae in a 
mass ratio of 3:3:2. The natural 
plant mosquito-repellent incense liquid adopts natural plants as the mosquito-repellent 
drug, is safe and free of 
toxicity, can effectively prevent mosquito 
biting, has refreshing and 
consciousness restoring effects due to the use of the additive, and is low in production cost, and the raw materials are low in cost and easy to obtain. For the preparation method of the natural plant mosquito-repellent incense liquid, a production process is simple, and the process flow is short, so that the method is suitable for industrial production.