The invention provides a mosquito-repellent sachet. The mosquito-repellent sachet is made by filling a sachet body with lavenders, marigolds, fructus tribuli, lantana flowers, holly flowers, herbal lycopi, chuanxiong rhizomes, roots of lindley butterflybush, fructus amomi rotundus, jasmine flowers and flos rhododendri mollis, wherein the lavenders, marigolds, fructus tribuli, lantana flowers, holly flowers, herbal lycopi, chuanxiong rhizomes, roots of lindley butterflybush, fructus amomi rotundus, jasmine flowers and flos rhododendri mollis are processed into powder, the powder passes through a 20-50-mesh sieve and then is put in the sachet body, and the powder can be neither too small to cause leakage of colored silk or broken cloth nor too large to achieve the medicinal effect too slowly. The mosquito-repellent sachet can slowly release fragrance with a mosquito-repellent medicinal effect to stimulate and repel mosquitoes.