In order to explore the influence of the desert wind velocity on wind velocity distribution in forest and windbreak effect, this article observed in multi points, using traditional statistical analysis, surfer software, geostatistics and other methods to analysis wind velocity distribution in forest and windbreak effect when the desert wind velocity is 5.4, 7.2 and 10.3 m/s. The results showed that the leeward side of primary forest formed a wind down district under all 3 kinds of desert wind velocity; The average wind velocity reduced by forest is 26.1%,23.3% and 25.7% under 3 kinds of desert wind velocity. The average effective protection area ratio is 50.8%, 41.7% and 47.7%. The overall effectiveness of forest protection is maximum with a wind speed of 5.4 m/s and minimum with a wind speed of 7.2 m/s; forest wind velocity spatial variability functions under 3 kinds of desert wind velocity can be a good fit as a spherical model, the ratio of nugget to sill under 3 kinds of desert wind velocity is small, and all were less than 25%, and forest wind velocity has a strong spatial autocorrelation. The influence of the wind velocity of desert on wind velocity distribution in network of forest and windbreak effect is complex, it does not increase or decrease with desert wind velocity but strongly influenced by forest structure and porosity.