The quasi periodicities of Chinese average temperature during the recent 100 years are diagnosed by using singular spectrum analysis( SSA). The results show that there exit two dominant periods which range 2~3 years and around 1 year in Chinese average temperature series, which are different from the quasi periodicities of average temperature in Northern Hemisphere at the same time. But their phase variability features of around 1 year periodic oscillation are resemble each other. China is divided into seven segments. SSA shows that the quasi periodic oscillations and their variations with time are different from each other over the seven segments. The periodic oscillations of around 1 year is most prominent in four domains’ temperatures of North, North East, North West China and the Tibetan Plateau. The periodic oscillations of temperature of quasi 2~3 years are most prominent in East, South and South West China.