The invention relates to a recyclable rare earth luminescence metal-organic framework new material for highly-selectively detecting a trace quantity of TNT. The material is prepared from rare earth europium ions and N-(3,5-dicarboxylphenyl)-4-carboxybenzamide through a solvothermal technology, and has the characteristics of simple preparation method, high purity and good stability. The material synthesized in the invention has strong rare earth metal europium characteristic luminescence, and the fluorescence intensity of the material obviously reduces with the addition of the trace quantity of the TNT, so the high-efficiency sensing detection of the trace quantity of the TNT is realized; and a further experiment result shows that the luminescence material for detecting the TNT has the advantages of high selectivity and recyclability. The material has the advantages of simple steps, convenience in operation, and strong practicality.