The results show that soil disintegration rate on the loess plateau is faster in the north-western region than in the southeastern region It takes regional change law clearly。Based on theexperiment data,we classfy the soil disintegration rate of this area as 5 regions.That is the slowestregion,very slow region,slow region,fast region and very fast region. The important factor that ef-fect the soil disintegration rate are agriculture tillage,plant or biotic growth and soil-forming pro-cess.Besides.the relationship between soil disintegration rate with soil anti-scourbility is powerfunction.