Compound Chinese herbal medicine agent as well as preparation method and application thereof

The invention discloses a compound Chinese herbal medicine agent as well as a preparation method and application thereof. A formula of the compound Chinese herbal medicine agent comprises, by weight,3-6 parts of white poria cocos, 14-20 parts of liquorice, 1.5-3.5 parts of folium mori, 1.5-3.5 parts of purple perilla, 1.5-3.5 parts of dandelion, 1.5-3.5 parts of herba portulacae and 0.5-1.5 partsof folium artemisiae argyi which are weighed. The preparation method comprises the following steps that (1) the folium mori, the purple perilla, the dandelion, the herba portulacae and the folium artemisiae argyi are taken according to the weight ratio of the formula and are mixed so as to obtain to-be-decocted herbal medicines; (2) the to-be-decocted herbal medicines are put into a decocting pot, water with the weight of 8-50 times of the weight of the decocted herbal medicines is added, soaking is carried out for 10-120 minutes, porous decocting stone with the weight of 1/10-2/5 of the weight of the water is added,