Tree-ring width chronology was constructed by using the tree ring cores of Pinus tabulaeformis Carr. from two sites on Funiu Mountain in western Henan Province. Correlation analysis showed that the tree ring index was closely related to average maximum temperature of May-July. We reconstructed the average maximum temperature of May-July for Funiu region from 1874 to 2007. "Jackknife" and "Bootstrap" methods were used respectively to estimate reliability of regression function based on statistics between the observed and reconstructed series. The explained variance reaches 40% (39% after adjusted degree of freedom). The overall test results sufficiently supported the validity of our regression model. Reconstruction indicated that there were 4 cold and 5 warm periods for the past 134 years respectively in this area. The most significant warm period during the entire reconstruction occurred between the 1920s and 1940s, and then the temperature began to decrease and reached to the lowest point in the 1950s. After a slight rise, it decreased again during the 1970s and 1980s. The temperature has increased rapidly since the late 1980s, showing a warming trend. Both the Funiu and Nanwutai temperature curves can be well compared after 10-year moving average, and they showed the regional trends synchronously.