Pinghe County，Fujian Province，as the main production area of pomelo in China，has the problem of excessive fertilization，which caused production ecological problems such as soil acidification and nutrient imbalance.Therefore，exploring the rational fertilization model is of great significance to guide the fertilization of honey pomelo.To explore reasonable fertilization mode，using field experiment method，5 different fertilization treatments were set up:the farmer conventional fertilization (F)，reducing fertilization (RF)，reducing fertilizer + lime (RFL)，reducing fertilizer + conditioner (RFC)，reducing fertilizer + lime + organic fertilizer partly replacing of chemical fertilizer (RFLM).A two-year field experiment was conducted to investigate the effects of different fertilization treatments on soil acidity and nutrient concentration.The results showed that:(1) RFL，RFC and RFLM treatments significantly increased soil surface acidity (0～20 cm) in a short term (2 years)，and RFLM had the best effect，but did not significantly change soil subsurface acidity (20～40 cm).(2) In 0～20 cm soil layer，the concentration of exchangeable acid and exchangeable aluminum in F treatment was the highest，while the base saturation was the lowest.Compared with the exchangeable acid and exchangeable aluminum in F treatment，the base saturation was significantly increased，and the cation exchange capacity of RFL and RFLM was significantly higher than that of F treatment.There were no significant differences in exchangeable acid，exchangeable aluminum and CEC among treatments at 20～40 cm depth.(3) The concentrations of NH4+，NO^3-，available P and available K in soil surface under F treatment in 2020 increased by 56.7%，60.4%，38.7% and 51.8%，respectively，compared with those in 2018，which were significantly higher than those in other reduced-fertilization treatments，while exchangeable Mg concentration did not change significantly.In 2020，the concentrations of NH4+，NO^3- and available K under F treatment increased by 120.9%，77.1% and 25.9%，respectively，compared with those in 2018，which were significantly higher than those under reduced fertilization，while exchangeable Ca and Mg concentrations did not change significantly over time.Compared with the F treatment in 2020，the enrichment of soil nutrients in other optimized fertilization treatments decreased and the growth demand of pomelo could still be maintained.Integrated soil acidity inproving，soil available nutrients maintaining and the environmental pressure reducing into consideration，it can be concluded that RFLM is a kind of ideal fertilization management practice of pomelo orchard under the condition of the experimental study，in which the yield and soil available nutrient supply will not be affected when fertilization is reduced for a certain period of time.