Abstract: A new system is developed for real-time monitoring of the optical turbulence altitude profile. A laser beam is transmitted and focused on certain height to form an artificial beacon. Its backscattering light propagates through the atmosphere. The lidar receives the signal coming from the scatter light of beacon and, at the same time, obtains the information of the atmosphere turbulence from the beacon to the receiver. When the laser beam is focused on different height, the lidar receives the backscattering light coming from the corresponding beacon in that height, thus an atmosphere turbulence profile could be obtained through algorithms. The profile of the refractive index structure constant is presented using the lidar and this lidar system can be used for turbulence profiles in contrast