The squeezed light could be employed in the weak-field precision measurement,the precision spectroscopy,and the other areas in quantum physics with a quantum-enhanced signal-to-noise(SNR)ratio.To improve detection sensitivity,a squeezed vacuum field and a polarization squeezed light resonant to Rubidium atomic D1 line at 795nm have been experimentally realized,and especially the latter one will be used as probe light of atomic magnetometer in the weak magnetic field measurement,and of atomic gyroscope in the inertial measurement.