The global average temperature has been increasing for the past century. It leads to the world climatic change. This study shows that the precipitation of Taiwan is probably affected by this world climatic change. The main periodicity of precipitation is 2~4 year with 95% significance is found for each season in most areas of Taiwan. Secondly, the 5~8 year and 9~12 year periodicities are also found in most areas of Taiwan. The precipitation in Taipei in fall and in Hengchun in Meiyu season has moderately positive correlation with QBO periodicity. However, the relation between the precipitation in Hengchun in typhoon season and QBO periodicity is moderately negative.