Abstract: Selecting Yakeshi City National Meteorological Station from 1961 to 2010 the last frost date and early frost frost free days, the characteristics of overall change cream Yakeshi was analyzed, the results indicated that： 1961-2010 near 50 years frost free days showed a slow increasing trend, increased rate of 2.3d/10a. The frost year total number of days the trend for the fluctuating upward, rising trend rate was 6.Sd/10a, the first frost date trends was rising, with the speed of 0.9d/10a pushed back, the last frost date trends was decreased, with the speed of 1.4d/10a in advance, and that same as the warming trend.