NOVELTY - A water-injection hydrogen generator (1) comprises housing which is encapsulated in a sealing manner for forming a hollow cavity in the inner part, and upper cover; partition plate fixed between housing and upper cover arranged in hollow cavity, where sealing encapsulated bottom part below partition plate is provided with reaction chamber (11) having reaction holes; microcrystalline ceramic film bound on the surrounding side of the bottom part in the reaction chamber in sealing manner; and lithium ingot (6) and spring (8) are arranged on microcrystalline ceramic film from down to up.    USE - As a water-injection hydrogen generator, useful in matched small-sized fuel cell.    ADVANTAGE - The water-injection hydrogen generator is simple in structure; is convenient in carrying and operation; has good safety; has low cost; and improves hydrogen generation rate.    DETAILED DESCRIPTION - A water-injection hydrogen generator (1) comprises housing which is encapsulated in a sealing manner for forming a hollow cavity in the inner part, and an upper cover, the lower end wall of the housing is provided with outfall, the top part of the upper cover is provided with a water injection hole and hydrogen outlet; partition plate fixed between the housing and the upper cover arranged in the hollow cavity, where the sealing encapsulated bottom part below the partition plate is provided with a reaction chamber (11) having reaction holes, the partition plate on the periphery of the reaction chamber is provided with a liquid-gas hole; microcrystalline ceramic film bound on the surrounding side of the bottom part in the reaction chamber in sealing manner; and a lithium ingot (6) and a spring (8) are arranged on the microcrystalline ceramic film from down to up.    DESCRIPTION OF DRAWING(S) - The figure shows sectional view of infusing hydrogen generator structure.    Water-injection hydrogen generator (1)    Electrolyte film (5)    Lithium ingot (6)    Rushing board (7)    Spring (8)    Reaction chamber (11)