Air craft observations of cloud condensation nuclei (CCN) were carried out over Qingdao area along the Shandong coast in August, 1984. The main results are presented herewith. The CCN concentration near the ground level is found to be about 10³cm³, decreasing with height exponentially. The concentration tends to decrease gradually from inland to the sea coast across the peninsula and is higher in the morning than in the afternoon as a whole. The relationship between the distribution of CCN and related meteorological factors is roughly examined.