In recent years,the laser radar based on single photon avalanche diode (SPAD) has been developed rapidly.It has been applied from military reconnaissance,biological detection and other special fields to the civilian fields such as unmanned systems which are in great demand.The SPAD detectors fabricated by gallium arsenide or indium phosphide,can respond to the near infrared with wave length longer than 1.54 μm,and be safe for human eyes.However,due to high manufacturing cost and small-scale integration,they cannot meet the requirements of low cost and high integration civil requirements.Presently,the silicon based SPAD detector can efficiently detect near infrared from 0.7 to 1.1μm through structure and technology optimization,which greatly reduce the laser power and the laser damage to the human eye.But in order to work safely,it is necessary to analyze the safety of human eyes.In this paper,based on the analysis of the current research status of SPAD radar,the human eye safety of near infrared shortwave radar is deeply and comprehensively analyzed.According to ANSI,the laser power and irradiation time conforming to the human eye safety are accurately calculated,which provides design basis for the application of silicon-based SPAD civil laser radar.