The invention discloses an oral care composition for children and applications of the oral care composition. The oral care composition is composed of newtol, a calcium-containing compound and probiotics, wherein the weight ratio of newtol to the calcium-containing compound is (1:2) to (50:1), and the weight ratio of newtol to probiotics is (1: 8) to (50:1). For the composition provided by the invention, the synergistic effects of newtol, the calcium-containing compound and probiotics are fully exerted, dental decay is prevented from different links, the caries prevention capacity is obviously superior to that of the single active matter, thus the effect of inhibiting oral bacteria superior to that of the single active matter is provided, meanwhile, the normal oral microbial flora can be maintained, thus the mouth health is guaranteed, and finally, the effects of removing the foreign smell of the oral cavity, preventing dental decay, promoting teeth calcification, solidifying the teeth, nourishing the gingival, and making the periodontal part healthy are achieved. The oral care composition for children can be used for preparing oral care products for children, such as children's toothpaste, children's mouth wash or children's mouth rinsing agents.