Abstract: The kinetic behavior of hydrolysis of TiCl₄ in the solution of hydrochloric acid of ilmenite was studied; the relation between the degree of hydrolysis and concentration of Ti(Ⅳ), temperature of hydrolysis, quantity of seed added and acidic concentration have been found and the following relation dn/dt = 0.lC^-1:5· ·n_0.6 (at η = 25%) was discovered, where Cis the initial concentration of Ti(Ⅳ), n the quantity of seed added.The calculated value of action energy which was obtained from the relation of temperature and the degree of hydrolysis was 201.9kJmol^-1.