The invention discloses a mesoporous material and application of the mesoporous material as a medicine carrier. The mesoporous material comprises mesoporous silica nanoparticles and are prepared from hexadecyl trimethyl ammonium bromide as a template agent and an organic solvent solution as a solvent system by enabling a silicon source to react under catalysis of alkali; the template agent further comprises isothiazolinone and is a compounded template agent comprising hexadecyl trimethyl ammonium bromide and isothiazolinone in a mass ratio of (4-6):1; the organic solvent solution is an aqueous solution of dimethyl sulfoxide; the volume concentration percentage of the dimethyl sulfoxide is 18-22%. The mesoporous silica nanoparticles disclosed by the invention are high in medicine carrying capacity, the medicine carrying capacity can be increased, the use amount can be reduced when a medicine is prepared from the mesoporous material as a carrier, and thus the taking burden of patients is alleviated; by taking gemcitabine as an example, the carrying capacity of the mesoporous silica nanoparticles for gemcitabine is about 60%, and thus the carrying capacity is remarkably prior to that of the prior art.