The invention relates to a method for producing titanium dioxide, belonging to the field of chemical industry. The invention solves the technical problem of providing a method for producing titanium dioxide with even particle size distribution. The method does not need to prepare crystal seed titanium liquid additionally. The method for producing titanium dioxide comprises the following steps of: a. preheating deionized water to 94 to 98 DEG C, adding hydrolysis titanium liquid with the temperature of 90 to 98 DEG C, and mixing evenly; b. raising the temperature to boiling, then keeping microboiling, stopping heating after the solution is changed to be grey, and cooling so as to avoid new crystal nucleus from forming again at the moment; c. heating again to boiling, then keeping microboiling till the hydrolysis is ended and obtaining a hydrolysis material; d. carrying out acid pickling, bleaching, washing, salt treatment, calcining and crushing to the hydrolysis material and obtaining the titanium dioxide. The method for producing titanium dioxide does not need to prepare crystal seed or crystal seed titanium liquid additionally, simplifies the production technique, and saves the production cost; the produced titanium dioxide has uniform particle size, narrow particle size distribution and good pigment performance; and the method provides a new selection for the preparation of the titanium dioxide of the field.