The invention discloses liquid 
shampoo and a preparation method thereof. The liquid 
shampoo comprises, by 
mass, 30-80 parts of 
black rice, 3-7 parts of lemon, 5-20 parts of pipal tree seeds, 3-10 parts of wild 
ginseng, 3-15 parts of tea seeds, 15-30 parts of 
saponin, 2-11 parts of platycodon grandiflorum, 2-10 parts of rhizoma anemarrhenae, 3-10 parts of 
polygonum multiflorum, 2-13 parts of fresh ginger, 2-18 parts of folium mori, 2-15 parts of 
angelica sinensis, 2-15 parts of saffron, 2-10 parts of 
coptis chinensis, 2-13 parts of lucid 
ganoderma, 2-10 parts of 
eclipta, 3-8 parts of medlar, 2-12 parts of 
astragalus membranaceus, 2-10 parts of 
ligusticum chuanxiong hort and 2-10 parts of aloe. The liquid 
shampoo is prepared according to the reasonable ratio, the effects of all the raw materials are remained, the synergistic 
interaction function is played through reasonable matching, and the liquid shampoo has the functions of hair cleaning, 
hair care, hair nourishing, hair reinforcing, 
hair loss preventing, hair generation, 
dandruff removal, 
itching relieving, 
radiation protection and 
dandruff generation prevention and the like.