Abstract: Sol-like zirconium salt was firstly prepared by hydrolysis reaction in the condition of alcohol-aqueous system with zirconium oxychloride as raw material，and then zirconia precursor was obtained after ultrasonic dispersion and ammonia precipitation etc..Nano-sized zirconia was finally prepared through drying and calcining.Synthesis process and performance of product were tested and characterized by techniques of IR，XRD，and SEM etc..Results showed well dispersed  nano-sized zirconia powders with tiny and uniform particles could be acquired，while under the conditions of volume ratio of alcohol-water was 5∶1，concentration of zirconium was 0.1 mol/L，PEG dosage was 10%（amount-of-substance fraction），and calcination temperature was 650 ℃.

Key words: alcohol-aqueous salt solutions heating method, nano-sized zirconia, precursor, characterization