Clouds exert an important influence on the weather and precipitation.The detection of cloud microphysical parameters(particle effective radius,drop number concentration,etc.),as well as of macro-physical parameters(cloud height,cloud thickness),is essential to studying cloud physical process and cloud radiation effects.The present paper aims to perform the detection and retrieval of cloud parameters and in-cloud turbulence characteristics with a ground-based millimeter cloud radar.By applying the Doppler spectrum data,the ambient vertical air velocity and cloud microphysical parameters are solved,whereby the turbulent dissipation rate ε and its distribution are obtained.Next,the relationships of vertical air motion to cloud microphysical parameters,radar reflectivity factor,Doppler velocity and Doppler spectrum width are thoroughly studied and analyzed so as to aid in understanding the cloud evolution.Cloud radar measurements and retrievals performed on a Stratiform cloud process case at Daocheng,Sichuan on August 8,2016 reveal the following:1)The cloud particle effective radius increases as the updraft increase,and the cloud drop number concentration decreases accordingly due to the collision-coalescence process;2)The turbulent dissipation rates ε are strong the near cloud base and cloud top,and weak in the middle layer,ranging from 10^-8 to 10^-2 m²·s^-3.The Doppler spectrum validates the hypotheses that the turbulent scale captured by cloud radar is in the inertial subrange;3)As the air updraft grows stronger,the cloud particles deposition speed is weakened,while the Doppler spectrum width is strengthened.