The 1μmband single photon detection Lidar has great development prospects in the direction of long distance laser ranging and imaging due to high atmospheric transmittance,low background noise,great infrared concealment,and high laser pulse energy.However,the lack of corresponding high performance single photon detectors for conventional 1064 nm lasers has become a bottleneck in the development of 1μmband single photon detection lidar.Geiger Si APD single photon detector (Si SPAD)has excellent detection performance,but its detection efficiency at 1064 nm wavelength is extremely low.In response to the contradiction between the laser and the detector,the 1030 nm wavelength single photon detection Lidar technology is investigated.The detection efficiency of Si SPAD at 1030 nm is 2.9 times higher than that of 1064 nm,and the detection distance of single photon detection Lidar under the same conditions is improved by 67.8%.In addition,abeam scanning device composed of two wedge shaped prisms is built to demonstrate single photon 3D imaging at 1030 nm.