The connection between sea ice variability and low-level cloud (CFC_low) cover in the Beaufort sea during melting season is investigated by analyzing the 35-yr ECMWF Re-Analysis products and the AVHRR-PM CDR and NOAA Climate Datasets. A positive correlation between low-level cloud cover and sea ice variability during melting season is found in Canadian basin and the correlation coefficient is 0.52 of 99% confidence. The main phenomenon is the uniformity of the changes in zone mean low-level cloud cover and sea ice melting boundary. The years with more CFC_low has more further south sea ice melting boundary and opposite in year with sea ice melting boundary further north. One reason can explain the positive correlation is the difference position of Beaufort High and polar vortex in further north and south sea ice melting boundary years. The different position can change the direction of the frontal and wind between them and in turn affect CFClow. AO and DA also play an important role in this process. Instead CFClow can affect sea ice by affecting the long - and short-wave radiation to control the underlying surface energy budget.