NOVELTY - Integrated water electrolysis hydrogen gas purifier system comprises outer cylinder (1) and inner cylinder (2), heating device that is set in interior of the inner cylinder, where the heating device comprises electric heating element (3) and protective sleeve (4). The protection sleeve is welded on one end of the inner cylinder and the outer cylinder is exposed, the other end is vertically extends into the inner part of the inner cylinder and is set between the outer molecular sieve and the inner wall of the outer wall of inner cylinder respectively providing with working gas outlet (6).    USE - As integrated water electrolysis hydrogen gas purifier system for decomposing ammonia to produce hydrogen gas (claimed).    ADVANTAGE - The present integrated water electrolysis hydrogen gas purifier system has reasonable structure; and also has reduced equipment material cost.    DETAILED DESCRIPTION - Integrated water electrolysis hydrogen gas purifier system comprises an outer cylinder (1) and an inner cylinder (2), and heating device that is set in the interior of the inner cylinder, where the heating device comprises an electric heating element (3) and a protective sleeve (4). The electric heating element is set on the protection sleeve. The protection sleeve is welded on one end of the inner cylinder and the outer cylinder is exposed, the other end is vertically extends into the inner part of the inner cylinder and is set between the outer molecular sieve and the inner wall of the outer wall of the inner cylinder respectively providing with working gas outlet (6). The molecular sieve inlet (7) on the upper part of the outer side wall of the working air inlet (8) is set on the pipe wall of the exposed protective sleeve of outer tube, and the molecular sieve outlet (9) is at the lower part of the outer side wall.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of integrated water electrolysis hydrogen gas purifier system.    Outer cylinder (1)    Inner cylinder (2)    Electric heating element (3)    Protective sleeve (4)    Working gas outlet (6)    Molecular sieve inlet (7)    Working air inlet (8)    Molecular sieve outlet (9)