The invention discloses an ultrafine calcium preparation with effects of inhibiting bacteria, relieving itching and dispelling dampness and an application of the ultrafine calcium preparation. The traditional Chinese medicine composition, namely, the ultrafine calcium preparation comprises raw materials in parts by mass as follows: 15-20 parts of incised notopterygium rhizome, 10-20 parts of baical skullcap root, 5-12 parts of Polyporus umbellatus, 5-12 parts of oriental waterplantain rhizome, 3-6 parts of wasabi, 6-10 parts of divaricate saposhnikovia root, 5-12 parts of largetrifoliolious bugbane rhizome, 9-20 parts of kudzuvine root, 3-6 parts of frankincense, 1-3 parts of synthetic musk, 1-3 parts of alum, 2-6 parts of ultrafine calcium and 1-3 parts of liquorice root. The ultrafine calcium preparation with the effects of inhibiting bacteria, relieving itching and dispelling dampness can effectively remove dampness and toxins, promote pus stopping and healing of a wound surface, remove necrotic tissue, promote granulation and repair and protect regenerated cells and epidermis while killing bacteria and diminishing inflammation, has the functions of inhibiting bacteria, relieving itching and dispelling dampness aiming at feet and can effectively relieve symptoms such as skin itching and the like caused by mosquito bites and toxins, and the traditional Chinese medicine composition can be further used for mould control, bacteria killing, odor removal and the like by means of the strong antibacterial activity.