NOVELTY - An automobile fuel saving emission reduction device comprises engine (1), direct current generator (3), electrolysis water device (6) and hydrogen delivery pipeline (13). The engine is connected with direct current generator in transmission manner. The device further comprises oxygen delivery pipeline (12). The positive and negative electrodes of output end of direct current generator are electrically connected with electrolysis anode plate and cathode plate in electrolysis water device. The electrolysis water device is provided with closed container.    USE - Automobile fuel saving emission reduction device.    ADVANTAGE - The device has simple structure, can change surplus power when car is driven in low and middle speed into hydrogen fuel to burn by engine, save fuel and decrease waste emission.    DETAILED DESCRIPTION - Automobile fuel saving emission reduction device comprises engine (1), direct current generator (3), electrolysis water device (6) and hydrogen delivery pipeline (13). The engine is connected with direct current generator in transmission manner. The device further comprises oxygen delivery pipeline (12). The positive and negative electrodes of output end of direct current generator are electrically connected with electrolysis anode plate and cathode plate in electrolysis water device. The electrolysis water device is provided with closed container which is provided with oxygen collection cavity and hydrogen collection cavity. The oxygen collection cavity is located above electrolysis anode plate. The hydrogen collection cavity is located above electrolysis cathode plate. One end of oxygen delivery pipeline is connected with oxygen collection cavity, where other end is connected with air inlet pipeline of the engine. One end of hydrogen deliver pipeline is connected with hydrogen collection cavity, where other end is connected with air inlet pipeline of the engine.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating an automobile fuel saving emission reduction device.    Engine (1)    Direct current generator (3)    Electrolysis water device (6)    Oxygen delivery pipeline (12)    Hydrogen delivery pipeline (13)