The invention discloses a hydrogen making system which comprises a feeding device, a gasification reaction device, a gas-solid separation device, a collection device, a cooling device and a vapor generation device, wherein the feeding device comprises a feeding mechanism, a material grouping mechanism, an exhaust mechanism and a feeding mechanism; the feeding mechanism comprises a collection tankfor collecting materials, a feeding cylinder which is communicated with the collection tank, a driving shaft which is arranged in the feeding cylinder, spiral blades which are fixedly arranged on thedriving shaft, and a driving part for driving the driving shaft to rotate. Due to adoption of the exhaust mechanism, only charcoal can be fed into the collection tank, no air is introduced, then the charcoal can be fed into the gasification reaction device through the rotating spiral blades in the processing process, the whole device does not need to be stopped, the working efficiency can be greatly improved, and in addition, energy consumption can be reduced.