The invention provides a dehydrogenation catalyzing material as well as a preparation method and application thereof. The dehydrogenation catalyzing material comprises the following components by weight: 0.5-5% of platinum element, 1-10% of IVA metal, 0.1-1% of Al and the balance of mesoporous silicon material, wherein the mesoporous silicon material serves as a carrier, the platinum element serves as a catalyst, the IVA metal serves as a first auxiliary and the Al serves as a second auxiliary. Compared with a multiple dipping method, the preparation method has the advantages that the active components and auxiliary elements are dipped and carried on the mesoporous silicon carrier in one step, so that the preparation method is simple in operation and short in preparation cycle; molecules of the active components and auxiliaries of the catalytic material obtained through one-step dipping are in fuller contact, which is beneficial to inhibit the enrichment of carbon on the active components, so that the deactivation rate is reduced and the stability of the catalytic material is increased.