The invention discloses mosquito-repellent soap and a making process thereof. The formula of the mosquito-repellent soap comprises the following components: 20-50 parts of a soap base, 5-10 parts of plant oil, 10-20 parts of dried stonewort powder, 1-2 parts of ethanol, 5-15 parts of spice and 8-18 parts of a natural evening primrose extract. As a stonewort concentrated liquid is taken as a raw material, in addition to a large amount of amino acid and minerals, the mosquito-repellent soap also comprises components such as organic acids, phenols and terpenes which have remarkable antibacterial mosquito-repellent effects and are harmless to human bodies, the effect of skin moistening can be doubled, and the soap is safe, healthy and harmless to use, good in cleaning effect, good in mosquito-repellent effect, capable of refreshing minds and long-lasting in fragrance; the temperature can be well controlled if the soap is heated by using an electric heater, the making efficiency can be improved, and a stirring machine can be replaced by a speed-variable single-blade stirring machine, so that not only is the speed effectively controlled, but also the single-blade stirring machine is very good in stability and can stir relatively uniformly and sufficiently; the mosquito-repellent soap is convenient to operate, precise to control, high in production quality and good in production attractiveness.