During the National Natural Science Foundation of China open cruise of the R/V Dongfanghong-2 (NSFC 41349901), coherent Doppler lidar developed by Ocean University of China is used to observe atmospheric boundary layer structure in the Bohai and Yellow Sea. Lidar measurement is operated in the region between 32oN～40oN and 118.5oE～125.3oE, from April 27 to May 19, 2014. Lidar transmits the laser pulse to the atmosphere and receives its backscattering echo signals. Signal to noise ratio is calculated for each range bin of fast Fourier transform spectrum. The marine atmospheric boundary layer height is retrieved according to the minimum of gradient of signal to noise ratio profile. Comparisons between coherent Doppler lidar retrieval and synchronous radiosonde profiling, Vaisala CL31 laser ceilometer data show a good agreement between each other. Correlation of lidar results with radiosonde potentail temperature data is 79% with a standard deviation of 610 m. Correlation of lidar and radiosonde relative humidity data is 90% with a standard deviation of 370 m. And the correlation of lidar and ceilometer data is 94% with a standard deviation of 320 m.