NOVELTY - Pressure-adjustable hydrogen generating device comprises a switch power module (1), an electrolysis module (2), a gas storing device (3), a pressure measuring device (4) and a control module (5). The electrolysis module comprises a liquid storing barrel device and an electrolysis tank device arranged under the liquid storing barrel device. The positive output of the switch power module is electrically connected with the storing barrel device and the negative output is electrically connected to a battery device. The electrolysis tank device is connected to a gas transferring device.    USE - Used as pressure-adjustable hydrogen generating device.    ADVANTAGE - The device has high control precision and ensures that, the electrolysis module is burnt by limited current, has convenient operation and stable electrolysis stability.    DETAILED DESCRIPTION - Pressure-adjustable hydrogen generating device comprises a switch power module (1), an electrolysis module (2), a gas storing device (3), a pressure measuring device (4) and a control module (5). The electrolysis module comprises a liquid storing barrel device and an electrolysis tank device arranged under the liquid storing barrel device. The positive output of the switch power module is electrically connected with the storing barrel device and the negative output is electrically connected with a battery device. The electrolysis tank device is connected with a gas transferring device by a gas guide pipe. The gas transferring device is provided with a pressure measuring device. The output end of the pressure measuring device is electrically connected with the input end of the control module. The output end of the control device is electrically connected with the switch power module. The pressure measuring device detects the output pressure of the hydrogen of the gas transferring device and converts into an electric signal and sends the signal to the control module, which counts the voltage for generating hydrogen and sends the hydrogen generating electric signal to the switch power module. The switch power module emits the corresponding electrolysis current by the hydrogen generating electric signal.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the pressure-adjustable hydrogen generating device.    Switch power module (1)    Electrolysis module (2)    Gas storing device (3)    Pressure measuring device (4)    Control module (5)