Abstract: A curved crystal spectrometer was developed on Qiang-guang I generator to measure the electron temperature of aluminum planar wire array Z-pinches. The spectrometer is composed of an elliptically-curved TlAP crystal and a Biomax-MS film, and the spectral range is from 1.8 keV to 3.0 keV, which covers part of the H-like and He-like K shell lines and continuum. The time-integrated spectra with axial distinction for shot 10084 with a planar aluminum wire array load were recorded by the spectrometer. The slope of the continuum radiated from a hot spot indicates an electron temperature of 520(135%)eV.