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Using the annual daily temperature data from 1961 to 2008， the changes of meteorological conditions and energysaving potentials during heating periods in Gangcha County of Qinghai Province are analyzed by the mathematicalstatistical method. The results indicate that the mean temperature in the heating period rose gradually while the negative accumulated temperature of the same period decreased from 1961 to 2008. As a result， the starting date of heating season postponed， but the ending date advanced， and the heating length remarkably shortened. The HDD （Heating Degree Day） was closely related to the average temperature of the heating period， decreased significantly， especially after the abrupt temperature change in 1994， which led to less cold winters and made the energy demand declined remarkably. The extraordinary high requirements for hearting energy resources were mainly in the 1960s; higherthannormal requirements were mainly between the 1970s and 1980s; lowerthannormal requirements were found after the middle 1980s， mainly occurred after 2000. From a meteorological point of view， about 7% of annual heating consumption can be saved owing to climate warming， which is beneficial for energy conservation and air pollution control.