On the basis of the meteorologic data in 30 years and the growing and developing character of 8 crops, the climatic ecology adaptability of the crop production in the red and yellow soils region of China is analyzed with the principle of subordinative function of fuzzy mathematics. The results show that the adaptability─subordinative values of temperature, sunshine and rainfall for the spring─sowing crops in the whole growing and developing periods are low, high, low; low, medium, high; and high, medium, low respectively. Those for the summer─sowing crops are low, high, low: high, medium, low; and low, low, low respectively.Those for the autumn─sowing crops are medium, high, low, high; high, low, low; and low,high, medium respectively. The optimal management countermeasure is suggested.