The invention discloses traditional Chinese medicine soap for treating common skin diseases of infants and adults and cleaning. The soap is prepared from a traditional Chinese medicine liquid and a soap base, and the liquid medicine comprises spina gleditsiae, rhizoma acori graminei, radix sophorae flavescentis, cortex phellodendri, fructus cnidii, cortex dictamni, rhizoma smilacis glabrae, foliumartemisiae argyi, oldenlandia diffusa, flos lonicerae, capillary artemisia, rhizoma atractylodis, camphor, radix stemonae and water. The soap is prepared from the plant soap base and a plurality of Chinese herbal medicine components according to a reasonable ratio, does not contain toxic and irritant components, pigments, essences, preservatives, hormones and the like, has the effects of preventing and treating skin diseases, is suitable for all parts of whole body, can be used for treating skin diseases such as infantile eczema, red fart, red and swollen mosquito bites, acne of adults, pruritus and peculiar smell of male and female private parts, tinea manus and pedis, dermatophyte infection and the like, can replace daily cleaning wash supplies and treatment ointment, is simple, convenient and quick to use, and can prevent and treat skin problems during daily cleaning and nursing.