Using the data of the maximum seasonally frozen depth,the longest frozen duration and the start and end days of the longest continuous freezing time from the meteorological stations in Chaoyang Prefecture of Liaoning Province from 1960 through 2015,the interannual change characteristics of permafrost in the prefecture were analyzed,,together with the wavelet analysis in this paper,and further discussed the influence factors on the seasonally frozen ground development in the prefecture. The results show that there have been four cycles of the maximum frozen depth,i. e. ,23 ~ 32 a,16 ~ 22 a,10 ~ 15 a and 4 ~ 9 a,respectively. There was a shift of the frozen ground depth in the early 1990s,showing a winter temperature warming in the prefecture since the early 1990s. According to correlation analysis between the temperature and frozen ground depth and frozen duration of seasonally frozen soil,it can be concluded that climate warming has a significant impact on the seasonally frozen in the prefecture. Meanwhile,the average temperature in winter and the lowest temperature in winter are closely related to the seasonally frozen depth in the prefecture. The analysis also indicates that the daily range of temperature in winter particularly affects the seasonally frozen depth. The lowest temperature in winter has closely related with the main frozen duration; the thermal factor that affects the end day of the main frozen period is the average maximum temperature in winter.