Abstract:The cloud microphysical data sampled with probes of Particles Measuring System ( PMS) on 3 March 2007 in Henan Province are analyzed. The results show that the maximum number concentration of small particles sampled with FSSP100 probe is 125 cm-3 at altitudes of 2875 m to 4600 m. The mean concentration is 21.3 cm-3. The mean diameter is around 6-20 μm. The data of 2DC probe show that the maximum number concentration of large particles changes from 5. 24 L-1 to 192 L-1. The maximum water content explored with KingLWC probe is 0.035-0.118 g·m-3. The inversion is detected by aircraft ascending and descending on 3 March 2007. There is a peak value of liquid water content (LWC) below the top of the inversion layer. The cloud droplet spectra are analyzed. Both vertical and horizontal distributions in stratiform clouds show obviously inhomogeneous features.