Fast classification of soil with different texture is essential for site-specific application of different inputs into farmland. Total 203 soil samples with five textures were collected from Silsoe Experimental Farm, Cranfield University, England. Using a Vis/NIR spectrophotometer (Tech5, Germany), spectra of soil samples were recorded for the study. Amongst the pre-processing methods, smoothing with moving average(MA), multiplicative scatter correction(MSC), standard normal variation(SNV), de-trending(DT), baseline correction(BC) and derivatives( 1 st and 2 nd ) were mainly investigated. PCA was applied for evaluation of the efficiency of different pre-processing methods on soil spectra. The sore plot of PCs shows that 1 st derivative can help separate all textures much more effective than other methods. According to the cumulative variance of first 8 PCs, the various combinations of MA, MSC, DT and BC can be regarded as good methods. The worst is 2 nd derivative due to its inducing much more noise. The study suggests that 1 st derivatives should be firstly concerned amongst various pre-processing methods for the classification of soil textures.