The invention belongs to the technical field of titanium chemical industry and particularly relates to study on a hydrolytic process for use in a refining process of crude titanium tetrachloride.The process includes: a, adding deliquesced NaCl into crude TiCl4 for hydrolyzing; b, precipitating a hydrolytic product, and layering to obtain supernate and bottom solution; c, subjecting the supernate to primary distillation and secondary distillation to distiller residue liquid and refined TiCl4.For a further increase in the yield of the refined TiCl4, the distiller residual liquid is also subjected to a series of treatments to obtain refined TiCl4.The process enables a great reduction in refining load, a reduction in accident occurrence, an increase in procedure production stability and yield and an increase in TiCl4 product quality.