Determination of soil texture is affected by various factors and ought to adopt a method of comprehensive fuzzy evaluation. Based on Kaczynski soil classification standard and ridge-type subordinate function

texture type of 4 Holocene loess profiles with 30 layers in the Guanzhong region was determined by applying synthetically decided method of weighting average. Results indicated that texture types of Malan loess (L1)，illuvial horizon (Ck)，and Holocene loess (L0) are identical and thus，do not have the significance of instruction. However

Holocene paleo sol (S0)，airslake andleaching loess (C1)，and modern topsoil(Ts) are difEerent.From east to west

soil texture types of So and G change from heavy loam soil

medium textured soil

to light textured soil. The change of topsoil(Ts) is indeterminacy because it is obviously affected by the human activities.