Using the observation data of cloud condensation nuclei (CCN) under 0.1%, 0.2%, 0.3%, 04%, 0.6%, and 0.8% supersaturations and meteorological data in the Liupan Mountain area from September 2022 to August 2023, this study explores the variation characteristics of CCN in Liupan Mountain and their influencing factors. The results show that, affected by meteorological factors, pollution sources, supersaturation, etc.: (1) The average concentration of CCN in the Liupan Mountain area is 589 cm^-3. The number distribution of CCN particles under each supersaturation shows a unimodal pattern. With the increase in supersaturation, the peak particle size of the number of particles increases, and the peak particle size under 0.8% supersaturation is 3.5 to 4.0 μm. The monthly variation of CCN number concentration shows the highest in June and the lowest in February; the diurnal variation shows that the concentration increases in the afternoon and evening. (2) The CCN number concentration is relatively high when the snowfall in the winter half-year is less than 2.5 mm and the rainfall in the summer half-year is less than 0.5 mm; in non-precipitation weather, the CCN number concentration is relatively high when the relative humidity is 30% to 90%, the wind speed is less than 15 m/s, the wind direction is easterly in the winter half-year, and the wind direction is 135° to 180° in the summer half-year. The CCN number concentration mean spectrum in non-snowfall weather in the winter half-year is higher than that in snowfall weather and the summer half-year. (3) When the rain intensity is 1.1 mm·h^-1 and 6.7 mm/h, the CCN number concentration reduction rates are 10.16 cm^-3·h^-1 and 20.11 cm^-3·h^-1, respectively; by fitting the CCN activation spectra, it is found that the parameter C of the CCN activation spectrum is significantly large in most periods (greater than 1000), and the fitting coefficient k is high (about 0.7 or more), indicating that the area often has obvious continental characteristics.