Based on the data of daily mean temperature of Hefei from 1953 to 2011, the change characteristics of daily mean temperature from winter to spring (January to April) of Hefei in recent 60 years have been analyzed by using Mann-Kendal technique. The change trend of the daily mean temperature, the beginning points and the break points of the daily mean temperature raise have been shown. The calculation results are tested by Yamamoto Test. The frequencies of the dates have been analyzed. The results showed that the fluctuations of the beginning points were large, and the distribution of corresponding dates was scatted. The days between 30th January and 10th February were more than other months. The fluctuations of break points were small. The corresponding dates intensively occured between the 10th and 15th January. The frequencies of dates between the 10th and 20th January were more than 50%.