Abstract: The invention provides a portable hydrogen supply system for safely storing hydrogen and capable of supplying hydrogen in gaseous form to a hydrogen-using device. The hydrogen supply system includes at least one hydrogen storage canister and a control valve, and provides a port. When the hydrogen supply system, with hydrogen previously absorbed in each hydrogen storage canister, connects with the hydrogen-using device, the hydrogen supply system supplies hydrogen with a stable pressure at the port to the hydrogen-using device, and the pressure of the hydrogen supplied by said system is capable of being changed by adjusted the control valve.