The invention belongs to the field of fluidized bed hydrogenation and particularly relates to a solid fuel fluidized bed near-zero emission hydrogen generating device. In the device, a raw material is fed into a gasification reactor from a feeder to be mixed and collided with a low valent metal oxide to obtain heat to be gasified in an atmosphere of vapor, the higher temperature of the low valentmetal oxide and can promote the further decomposition of gasified tar, a purification and filtration unit and a hydrogen separation unit can divide gases generated by gasification into pure hydrogen and low-hydrogen combustible gases, the low-hydrogen combustible gases are delivered to a fuel reactor through a pipe to be reacted with the metal oxide, the low valent metal oxide is oxidized in an air reactor to form oxygen, and the heat released in oxidization is released to provide heat for the system. The solid fuel fluidized bed near-zero emission hydrogen generating device ensures the circulation of a oxygen carrier among three reactors and, therefore, realizes energy and oxygen supply. High-concentration CO2 can be obtained and further used or buried deeply, so efficiency, cleanness, conservation and utilization of energy are realized.