Abstract: Based on the biology adaptation area analysis system，the introduction of foreign color cotton in the adaptation area of China shows that the two color cotton cuhivars bred in Ashabad Turkmen and Guanajuato Mexico have very different adaptation areas．The adaptation area of Ashabad color cotton is mainly in the Northwest of China，and that of Guanajuato color cotton is mainly in the Southwest of China．The differences of adaptability of Guanajuato color cotton are quite significant due to the complexity of terrain．Thus，the affection of sunshine must be considered adequately．