A novel sodium specific kind of ion exchanger Li1.4Cr0.2Al0.2Ti1.6(PO4)3 fabricated by a solid-state reaction method. The microstructure XRD, FTIR, Raman spectra, adsorption performances were investigated. The average grain size of the samples was about 70~90 μm. FTIR and Raman spectra studies were carried out and the vibrational bands were assigned. XRD analysis showed that the structure of Li1.4Cr0.2Al0.2Ti1.6(PO4)3 convert to Na1.4Cr0.2Al0.2Ti1.6(PO4)3 after adsorption. The exchange capacity reaches 34.12 mg/g, under adsorption duration 12 h, temperature 50 ?. The experimental results showed that the Na/Li ion exchange reaction rate increased obviously for Li1.4Cr0.2Al0.2Ti1.6(PO4)3 with increasing temperature, and the Na/Li ion exchange kinetics process of Li1.4Cr0.2Al0.2Ti1.6(PO4)3 in lithium chloride solution could be represented approximately by the equation of JMAK.