The experimental results for N2+ laser are presented. The measured optimum partial pressure of N2+ was 2.4 torr at a total pressure of 2 atm. in He/N2 mixture. Kinetics of formation and quenching are analysed and discussed. The spectra of the N2+ laser at 427.8 nm were determined with the second order spectra of a 2-meter grating spectrometer. We observed that the 427.8 nm line is a doublet.