The invention discloses an integrated cavity suitable for ink preparation and three-dimensional direct writing of an energetic material. The integrated cavity comprises a multi-tooth type front end sealing cover, an explosive loading cavity, a connector, an upper pressure bearing cavity and a self-locking sealing cover, wherein the multi-tooth type front end sealing cover is screwed into the bottom end of the explosive loading cavity through internal threads, and preparation of the energetic material ink can be carried out; and the explosive loading cavity and the upper pressure bearing cavityare fixedly sealed and connected through the connector, the self-locking sealing cover is connected with the upper bearing pressing cavity in a buckled mode, and therefore the integrated cavity is formed in sequence, and all materials are anti-static materials. According to the integrated cavity, the two-step process of preparing the energy-containing ink and transferring the energy-containing ink into a three-dimensional mobile platform is one, so that the problems of friction between the energetic material and the cavity wall, non-uniform stress, static accumulation and material waste existing in the preparation and transfer process of the energetic ink, uneven density and the like caused by stirring in the energy-containing ink can be effectively solved, and the three-dimensional direct writing reliability and safety of the energetic material can be improved.