Medicine for treating dermatitis eczema, pruritus due to mosquito bites and use thereof

The invention discloses a medicine for treating pruritus caused by dermatitis, eczema and insect bite, and applications thereof. The medicine is a preparation prepared by the following components according to weight percentage: 0.1 percent to 90 percent of glycyrrhizic acid or physically acceptable salt of glycyrrhizic acid or glycyrrhetic acid or physically acceptable salt of glycyrrhetic acid, 0 percent to 90 percent of total matrines or physically acceptable salt of total matrines or oxymatrine or physically acceptable salt of oxymatrine or matrine or physically acceptable salt of matrine, 0 percent to 90 percent of hibiscus syriacus acid or physically acceptable salt of hibiscus syriacus acid or pseudolaric acid B or physically acceptable salt of pseudolaric acid B or osthole or total coumarins of fructus cnidii, and 1 percent to 5 percent of menthol or borneol. The medicine has the effect of anti-inflammatory, bacteriostasis and relieving itching, has unique therapeutic effect on pruritus caused by dermatitis, eczema and insect bite. The raw materials used by the medicine are nontoxic and cheap with low cost.