Novel long persistent phosphors of $CaZrO_3:Er^{3+}$ have been synthesized by traditional solid state reaction method. The long persistent phosphor crystalline particles were characterized by the X-ray diffraction (XRD), photoluminescence spectrophotometer, thermoluminescence (TL) and luminance meter. The results reveal that the samples are composed of single $CaZrO_3$ phase. The broadband emission spectra of 446 nm peak and 550 nm peak was revealed by synthesized at high temperature in $N_2$ gas. Green long persistent phosphors have been observed in the sys_em for over 6 h after UV irradiation (254 nm). The main emission peak was ascribed to $Er^{3+}$ ions transition from $^5D_{5/2}{ ightarrow}^4F_{9/2},;^2H_{12/2},;^4S_{3/2}{ ightarrow}^4I_{13/2};and;^2G_{9/2}{ ightarrow}^4I_{13/2}$, and the afterglow may be ascribed to the suitable trap centers in the $CaZrO_3$ host lattice.