The invention discloses a composition capable of reducing halitosis and application thereof. The composition comprises composite probiotics, the composite probiotics comprise lactobacillus salivarius,bifidobacteria, lactobacillus rhamnosus, lactobacillus acidophilus, lactobacillus reuteri, streptococcus salivarius and lactobacillus johnsonii, wherein each gram of composition at least contains 2 billions of lactobacillus salivarius, 1 billions of bifidobacteria, 2 billions of lactobacillus johnsonii, 4 billions of lactobacillus rhamnosus, 2 billions of lactobacillus acidophilus, 2 billions oflactobacillus reuteri and 2 billions of streptococcus salivarius. The composition can also be widely applied in the preparation of drugs for treating halitosis, oral care products, cosmetic compositions, food or health-care products. Compared with the prior art, the composition disclosed by the solution of the invention can treat both intra-oral halitosis and extra-oral halitosis, and has the advantages of good therapeutic effect, broad application prospect and the like.