Abstract: The improvement of basic soil productivity is important to reduce fertilizer application rates and increase crop yield. In order to study the basic soil productivity conditions in fluvo-Aquic soil region, north China, the basic soil productivity were studied on typical fluvo-aquic soils at three sites (Yuanyang county, Zhoukou city and Xiayi county) of different fertilities under wheat maize rotation system by two-year field experiment and statistical analysis technique. The results showed that the contribution rates of basic soil productivity were 78.1% and 76.7% in the wheat season in 2012 and 2013, respectively, which were a little higher than that of the maize season of 71.9% and 74.4%; the mean contribution rates of basic soil productivity of the two crops were 74.5% in 2012 and 75.1% in 2013, the contribution rates had no significant difference between low fertility soil and high fertility soil. To sum up, the contribution rate of basic soil productivity in fluvo-aquic soil region, north China under the wheat-maize rotation was about 75%.