The invention relates to a preparation method, performance and application of novel green light-emitting material terbium lead multi-borate. The novel green light-emitting material terbium lead multi-borate is characterized in that the molecular formula of the novel green light-emitting material terbium lead multi-borate is PbTbB7O13, the compound belongs to the monoclinic system, non-center space group is P21, and unit parameters are a=7.7676(8) angstrom, b=9.0824(10) angstrom and c=13.2535(14) angstrom. The compound comprises a BO3 plane triangle and a BO4 tetrahedron and is characterized in that the BO3 plane triangle and the BO4 tetrahedron are connected by sharing vertex oxygen atoms to form a complex two-dimensional anion framework network structure recorded as [B7O13]<5->8, and Pb<2+> and Tb<3+> are distributed in and among the anion layers of B7O13]<5->8 and connected with the anion layers through ionic bond action so as balance charge and support the framework. The PbTbB7O13 can emit bright green fluorescent light under near ultraviolet excitation and can be used as green fluorescent powder to be applied to the technical field of fluorescent light-emitting materials. The excitation spectrum of the PbTbB7O13 covers a wide waveband ranging from 330 nanometers to 380 nanometers, so that the PbTbB7O13 can be effectively excited by near ultraviolet and is suitable for being used as the fluorescent powder to be applied to near ultraviolet LED lighting devices.