The effect of high temperature thermal treatment on the colour of Chinese fir has been studied in the paper by using colour difference meter. The results show that with the increase in temerature, the lightness index L of Chinese fir reduces, the colour indexs a and b increase firstly and then decrease; For the different treatment temperature under the same duration time, the lightness index L of Chinese fir also reduces and the colour indexs a and b varied irregularly; The Chinese fir can be to imitate the...