The invention discloses a novel energy-containing material with high reaction enthalpy and a preparation method for the novel energy-containing material. The material comprises the following components in percentage by mass: 30-70% of a fluorine-containing component as an oxidizing agent and 70-30% of an energy-containing metal component or a mixed component of energy-containing metals and energy-containing non-metals as fuel (a reducing agent), wherein the fluorine-containing component is a high-fluorine-content polymer which can be dissolved by a common solvent and the fluorine content is greater than 80%; the energy-containing metal component is energy-containing metal single substances such as aluminum and titanium; the energy-containing non-metal component is energy-containing non-metal single substances such as boron and silicon. By using the fluorine-containing polymer which can be dissolved, solutions of the energy-containing material oxidizing agent component and the fuel component are mixed by a wet process, so that the mixing dispersity is high and the contact tightness is high, and the chemical reaction and the chemical latent energy release rate of the obtained energy-containing material are favorably improved, and therefore, the reaction enthalpy is further improved. The preparation process is simple and the processing temperature is low, and a heat reaction and excitation in advance of the energy-containing material can be avoided during processing, so that safety processing is realized.