The invention discloses children allergic rhinitis oil and a preparation method thereof. The child allergic rhinitis oil is prepared from the following raw materials in parts by mass: 20-40 parts of flos magnoliae liliflorae, 10-30 parts of cocklebur fruits, 10-20 parts of fructus liquidambaris, 10-20 parts of licorice roots, 10-20 parts of rhizoma acori graminei, 60-80 parts of sesame oil, 10-50parts of olive oil, 5-10 parts of tea tree essential oil, 5-10 parts of honeysuckle flowers, 7-15 parts of Chinese azalea flowers, 6-15 parts of herba ephedrae, 2-5 parts of radix arnebiae seu lithospermi, 4-6 parts of radix scutellariae, 10-15 parts of herba houttuyniae, 8-12 parts of walnut kernels, 10-20 parts of radix astragali, 10-20 parts of periostracum cicada, 1-5 parts of herba schizonepetae, 1-6 parts of radix pseudostellariae, 6-10 parts of stiff silkworm, 6-10 parts of rhizoma pinelliae preparata, 3-7 parts of carapax eretmochelyos, 5-15 parts of bighead atractylodes rhizome, 1-11parts of radix bupleuri, 0.02-2 parts of a vitamin composition, 0.4-4 parts of an amino acid composition and 0.3-3 parts of adjuvant materials. The children allergic rhinitis oil has the beneficial effects of being beneficial to children and obvious in antiallergic and anti-inflammatory effects.