The invention discloses a natural traditional Chinese medicine mosquito-repellent incense and a preparation method thereof. The mosquito repellent incense is prepared from the following raw materials in parts by weight: 8-16 parts of pelargonium graveolens, 7-18 parts of folium artemisiae argyi, 6-17 parts of marigold, 9-19 parts of Chinese asafoetida, 6-18 parts of lantana camara l., 7-17 parts of houttuynia cordata, 4-15 parts of radix angelicae, 5-13 parts of rhizoma acori graminei, 6-16 parts of honeysuckle, 4-14 parts of lavender, 4-11 parts of sandalwood, 6-17 parts of agastache rugosus, 5-15 parts of mint, 6-15 parts of cordate telosma, 6-12 parts of polygala tenuifolia, and 4-15 parts of liquorice. The mosquito repellent incense provided by the invention does not have any toxic chemical composition, does not have any toxic or side effect on human bodies, and also has the effects of killing insects, inhibiting bacteria, calming heart, tranquilizing mind and improving the quality of sleeping besides having a significant mosquito repellent effect.