Abstract: In order to conduct the study on nuclear physics, particle physics and condensed matter physics, the β-NMR and β-NQR spectrometer was established in China Institute of Atomic Energy. The lifetime, magnetic moment and polarization of 12B were measured with it. The measured magnetic moment of 12B is (1.000 2±0.002 8) nm and the polarization of 12B in Cu is 11.4%±0.6%. The experimental results show the reliability of the established β-NMR and β-NQR spectrometer.