The invention relates to the technical field of medicaments, in particular to a medicinal composition for treating 
skin eczema and 
itching and a preparation process thereof. The medicinal composition is prepared from the following raw materials in parts by weight: 10-15 parts of 
zanthoxylum bungeagum maxim, 20-25 parts of 
gypsum, 8-10 parts of cortex phellodendri, 4-6 parts of 
indigo naturalis leaf 
powder, 3-5 parts of Chinese lizardtail 
rhizome or 
herb, 6-12 parts of fructus kochiae, 5-8 parts of 
mentha haplocalyx herba, 1-3 parts of borneclum syntheticum, 0-2 parts of liquorice root, 2-5 parts of rhizoma et radix notopterygii, 3-6 parts of radix achyranthis bidentatae, 0-3 parts of radix puerariae, 1-3 parts of cortex magnoliae 
officinalis, 0.5-4 parts of 
periostracum cicada, 0-2 parts of herba schizonepetae, 1-3 parts of radix saposhnikoviae and 1-2 parts of radix sophorae flavescentis. In the medicinal composition, traditional Chinese medicines are combined reasonably; the 
gypsum, the cortex phellodendri and the 
indigo naturalis leaf 
powder which are used together can achieve the effects of clearing away heat, healing sore and promoting tissue regeneration; the 
periostracum cicada, the herba schizonepetae, the radix saposhnikoviae and the radix sophorae flavescentis which are used together can promote eruption and relieve 
convulsion; the 
zanthoxylum bungeagum maxim, the Chinese lizardtail 
rhizome or 
herb, the liquorice root, the rhizoma et radix notopterygii, the radix achyranthis bidentatae, the radix puerariae and the cortex magnoliae 
officinalis which are used together have the effects of removing dampness, relieving pain, killing insects, detoxifying, relieving 
itching and removing fishy smell; the fructus kochiae can achieve the effects of clearing heat, promoting 
diuresis, dispelling wind and arresting 
itching. The traditional Chinese medicinal composition provided by the invention has a remarkable 
curative effect on 
skin eczema and itching, is low in preparation cost, is convenient to use, and has a clinical curative rate being up to 98 percent.