Using visible near-infrared (Vis-Near Infrared, VNIR) spectral data to build inversion model is a rapid and nondestructive potential method to measure soil properties. However, the models based on pure statistical methods are weak in explaining the information of soil properties. This paper studied the effects and strategies of parent materials and land use types on the established spectral inversion model. 3 sample sets of SF (forestry soils from Xuanchens), SP (paddy soils from Xuancheng) and DP (paddy soils from Dingyuan) were used, where, SF and SP with same parent material, SP and DP with same land use type. The results showed that the differences of parent materials and land use typse could affect the suitability of the off-site model significantly. It is possibly unreliable to use a model in a different region with different parent materials or land use types, however, the global model with expense of the prediction accuracy can be used when the off-site model does not work well.