The present invention provides a high-sensitivity homogeneous DNA hibridization fluorescence determination method. Eu-compound of EDTA is used to label 5'-end or 3'-end DNA probe, a kind of didentate beta-diketone is used to label 5'-end or 3'-end DNA probe for simultaneous hibridization reaction. After two labeled DNA probes are hybridized with target DNA, EDTA-Eu and beta-diketone close to each other to form ternary strong fluorescence compound EDTA-Eu-diketone. By the time identifying fluorescence process, the fluorescence strength of the formed ternary fluorescence compound is measured and the concentration of the target DNa is determined. The present invention has high sensitivty and wide application. |