The invention discloses substitutional tea for 
adjuvant therapy of eczema and a preparation method thereof. The substitutional tea is prepared from the following components in parts by weight: 15 to 25 parts of poria cocos, 7 to 15 parts of purple perilla, 3 to 6 parts of liquorice root, and one or more of 7 to 15 parts of rhizoma polygonati, 10 to 20 parts of orange peel, 10 to 20 parts of 
semen coicis, 10 to 20 parts of fructus momordicae and 3 to 10 parts of double-
petal red rose. The preparation method comprises the following steps: coarsely crushing the raw materials respectively, passing through a 6-10mm screen, adding a certain amount of water, mixing, 
drying, carrying out 
superfine grinding, uniformly mixing the obtained superfine 
powder to obtain mixed 
powder, and adding a certain amount of water to prepare a soft material; granulating the soft material in a granulator; and finally, carrying out hot air circulation 
drying on the prepared granules. The substitutional tea for 
adjuvant therapy of eczema prepared by the invention regulates the mechanism of a 
human body from the internal cause of eczema, and all the components act on the 
human body in a coordinated manner, so that the purpose of treating both symptoms and root causes of eczema is achieved. The substitutional tea consists of medicinal and 
edible plants, has stable components, is not easy to cake and deteriorate, is easy to brew, is mild and has no 
side effect, and beneficial components are more beneficial to absorption.