The invention discloses an antipruritic and anti-allergic baby washing and protecting preparation and an application thereof. The antipruritic and anti-allergic baby washing and protecting preparations comprises a wild chrysanthemum flower extract, a dandelion extract, a milkvetch root extract, and a bitter apricot seed extract. The antipruritic and anti-allergic baby washing and protecting preparation contains mild and natural plant extracts, the addition of irritant substances is avoided from the raw materials, the irritation of the product is reduced, and the relatively good experience sense, and relatively strong anti-allergenicity and antipruritic performance are realized through the synergistic compatibility effects of the specific components. The patch test results show that the washing and protecting preparation is a negative result, and does not have irritation to the skin, the eye irritation test results show a NC value of less than or equal to 2, the washing and protecting preparation is the stress irritation, namely, is damage-free irritation, has no eye irritation, and is safe and mild. In addition, a foam volume of the product can reach 770 mL, the time of discharging50 mL of a liquid by foam can reach 11.8 s, the foaming ability is strong, the foam stability is good, and thereby the washing and protecting preparation can be widely used in the preparation of infants and young children products.