A voice recognition dictionary generation apparatus and method for suppressing reduction of processing speed at the time of updating. The apparatus includes an input unit configured to receive a text subjected to voice recognition, a storage unit configured to store the text with respect to each file of a predetermined item, a reading data generation unit configured to analyze the text and generate a reading data, and a voice recognition dictionary configured to include content dictionaries that store therein the reading data of the text with respect to each file of the predetermined item. When the file of the predetermined item including the text stored in the storage unit is updated, a control unit detects a total number of the content dictionaries, and when the total number is smaller than a predetermined limit, the control unit generates the content dictionaries with respect to each updated predetermined item.