The invention discloses a method for preparing titanium hydride powder by a chemical method, and belongs to the technical field of powder preparation. The method comprises the specific steps that titanium powder serves as a raw material; a certain amount of zinc powder and a certain concentration of sulphuric acid solution are added; and the titanium hydride powder is prepared at normal pressure and at 120-230 DEG C. The method is first used for successfully preparing the titanium hydride powder by the chemical method; hydrogen is not added to a sealed container in a preparation process, so that the cost is saved and environmental pollution is reduced; and the synthesis temperature is low and normal pressure operation is adopted, so that industrial mass production can be easily realized and development of a hydrogen storage material can be promoted.