The invention discloses a method for producing hydrogen through adsorbing, reinforcing and reforming glycerinum. The method comprises the steps of filling a Ca-Co-O catalyst with functions of catalyzing and absorbing CO2 in a fixed bed reactor, and under the condition of adopting inert gas as a carrier gas, feeding glycerite with the concentration being 0.124 to 0.749g/ml at the weight hourly space velocity of 0.066 to 2.624h<-1>, wherein the reaction temperature is 400 to 700 DEG C; after the adsorption of the CO2 is saturated, carrying out catalyst regeneration for 0.1 to 6h at 500 to 1000 DEG C in the air atmosphere. The Ca-Co-O catalyst is prepared through the following steps of dissolving and mixing cobalt salt and calcium salt in water, and after drying, calcining for 1 to 10h at 500 to 1000 DEG C. The hydrogen obtained in the invention is aroundbout 95 percent in whole 30 circles of tests, meanwhile, the CO2 absorption breakthrough time is stabilized in 9min, and the catalyst is simple in preparation process and easy for mass production.