The invention discloses a metal porous organic framework material, and a preparation method and applications thereof. According to the preparation method, Zn2+ is taken as a central metal, and 1,3,5-benzenetricarboxylic acid and 2-aminoterephthalic acid are taken as organic ligands to construct the metal porous organic framework material; the crystal form is rhombic dodecahedron; the particle size is about 500<mu>m; the metal porous organic framework material possesses fluorescence performance, and can be used for detection of nitroaromatic compounds. The preparation method comprises following steps: zinc nitrate hexahydrate, 1,3,5-benzenetricarboxylic acid, and 2-aminoterephthalic acid are dissolved in a solvent, an obtained mixture is mixed to be uniform, and is delivered into a high pressure reaction kettle, the high pressure reaction kettle is sealed, reaction temperature is controlled to be 75 DEG C<T<=95 DEG C, reaction time is controlled to be 46 to 52h, after reaction, an obtained product is cooled to room temperature naturally, filtering is carried out so as to obtain a crystal product, and the crystal product is washed with a reaction solvent, and is dried and store. The preparation method is simple, and operation is convenient.