Based on the data of the 3^rdNational Soil Survey (2022) of Huangchuan County, Henan Province, combined with the data of the 2^nd National Soil Survey (1982), this paper introduced the update of soil genetic classification system, analyzed the changes of soil main properties (pH, organic matter, available nitrogen, phosphorus and potassium) and their influencing factors. The results showed that: 1) The update of soil genetic classification system were mainly manifested in the followings, there were 3, 10, 15 and 53 kinds of soil groups, subgroups, genera and species respectively in soil genetic classification system of the 2^nd National Soil Survey, which were changed into 6, 14, 21 and 43 respectively in soil genetic classification system of the 3^rd National Soil Survey, yellow-cinnamon soil group (with 8 soil species) and red clay soil group (with 4 soil species)were newly divided from original yellow-brown soil group, purple soil group was added (with one soil species), in addition, some soil genus and species were also adjusted accordingly (including merged and added); 2) Since 1982, soil pH and available phosphorus decreased gradually, organic matter and total nitrogen increased gradually, while available potassium changed irregularly, mainly because of long-term application of acid fertilizer, straw returning to field, and the planting of green manure corps; 3) In terms of land use change, conversions from ‘dry to water’ and from ‘water to garden’ were more common, which led to the change of soil types, and the main changes included yellow-cinnamon soil, yellow-brown soil and fluvo-aquic soil changed into paddy soil, and paddy soil changed into brown-cinnamon soil and fluvo-aquic soil; 4) There is a soil acidification trend in Huangchuan County, and the nutrient contents were also not high, therefore, the targeted measures need to be taken in order to control soil acidification and improve soil fertility.