A stacking type hydrogen generating device, comprising: a water tank configured for accommodating a water; an electrolysis module disposed in the water tank, the electrolysis module being configured to electrolyze the water and generate a gas comprising hydrogen into the water tank; a humidifier vertically stacked above the water tank, the humidifier having an accommodating space and a first flow channel, the first flow channel being isolated from the accommodating space, the accommodating space being configured for accommodating supplemental water and one end of the first flow channel being coupled to the water tank to receive the gas comprising hydrogen from the water tank; a filter vertically stacked above the humidifier, the filter comprising a gas inlet coupled to the other end of the first flow channel to receive the gas comprising hydrogen, the filter further comprising a filtration flow channel coupled to the gas inlet and a gas outlet coupled to the filtration flow channel and the accommodating space of the humidifier, the filtration flow channel being configured to transport and filter the gas comprising hydrogen, and the gas outlet being configured to transport the gas comprising hydrogen to the humidifier; an activated carbon tube, coupled to the humidifier to receive the gas comprising hydrogen from the accommodating space of the humidifier, wherein the gas comprising hydrogen passes through the activated carbon tube and then is outputted from the activated carbon tube; and a flow channel module, comprising a first port, a second port and a second flow channel, the first port being coupled to the gas inlet of the filter to import the gas comprising hydrogen from the water tank into the filter, the second port being coupled to the gas outlet of the filter to output the gas with hydrogen from the filter, one side of the second flow channel being coupled to the activated carbon tube to receive the gas comprising hydrogen from the activated carbon tube, wherein the first port, the second port and the second flow channel are integrally formed with the flow channel module; wherein the first flow channel is integrally formed with the humidifier, and the gas inlet, the filtration flow channel and the gas outlet are integrally formed with the filter. a water tank configured for accommodating a water; an electrolysis module disposed in the water tank, the electrolysis module being configured to electrolyze the water and generate a gas comprising hydrogen into the water tank; a humidifier vertically stacked above the water tank, the humidifier having an accommodating space and a first flow channel, the first flow channel being isolated from the accommodating space, the accommodating space being configured for accommodating supplemental water and one end of the first flow channel being coupled to the water tank to receive the gas comprising hydrogen from the water tank; a filter vertically stacked above the humidifier, the filter comprising a gas inlet coupled to the other end of the first flow channel to receive the gas comprising hydrogen, the filter further comprising a filtration flow channel coupled to the gas inlet and a gas outlet coupled to the filtration flow channel and the accommodating space of the humidifier, the filtration flow channel being configured to transport and filter the gas comprising hydrogen, and the gas outlet being configured to transport the gas comprising hydrogen to the humidifier; an activated carbon tube, coupled to the humidifier to receive the gas comprising hydrogen from the accommodating space of the humidifier, wherein the gas comprising hydrogen passes through the activated carbon tube and then is outputted from the activated carbon tube; and a flow channel module, comprising a first port, a second port and a second flow channel, the first port being coupled to the gas inlet of the filter to import the gas comprising hydrogen from the water tank into the filter, the second port being coupled to the gas outlet of the filter to output the gas with hydrogen from the filter, one side of the second flow channel being coupled to the activated carbon tube to receive the gas comprising hydrogen from the activated carbon tube, wherein the first port, the second port and the second flow channel are integrally formed with the flow channel module; wherein the first flow channel is integrally formed with the humidifier, and the gas inlet, the filtration flow channel and the gas outlet are integrally formed with the filter.