The CO2 adsorption performance of the calcium-based adsorbent cycle plays an important role in continuous and efficient hydrogen production from enhanced biomass gasification. Six kinds of synthetic adsorbent powders (CaMg75, CaAl75, CaLa75, CaY75, CaNd75 and CaSi75) and six kinds of synthetic adsorbent particles (CaMg75p, CaAl75p, CaLa75p, CaY75p, CaNd75p and CaSi75p) were prepared by adding different inert carriers into CaO particles and extrusion-spheronization process , wherein the mass fraction of CaO were 75%. Meanwhile, calcium oxide powder (CaO) obtained by calcination of calcium carbonate and its corresponding calcium oxide particles (CaOp) were prepared. The above seven kinds of powders were tested by X-ray diffraction (XRD). Seven kinds of adsorbent powders and seven kinds of particles were tested by specific surface area and pore size tester. Thermogravimetric analysis (TG) was used to test the carbonation-calcination cycle of the above seven adsorbent powders and their corresponding adsorbent particles. Based on the thermogravimetric test results, the enhanced biomass gasification experiment for hydrogen production under the condition of adsorbent recycling was carried out with smoke bars as the original biomass. The results show that there are MgO, Ca3Al2O6, La2O3, Y2O3, Nd2O3 and Ca2SiO4 inert carriers in the powders of the six synthetic adsorbents. The inert carriers can not react with CO2, but also disperse CaO grains. The thermal stability is good. The sintering of the adsorbents can be delayed and the adsorptive performance of the adsorbents can be improved. They have good thermal stability and they can delay the sintering of adsorbent to improve the adsorptive performance of adsorbent. The extrusion-spheronization process destroys the original pore structure of the adsorbent, and the specific surface area of spherical particles of synthetic CaO adsorbent is lower than that of the same kind of powder, which leads to the decrease of adsorptive performance of adsorbent particles. With the increase of thermogravimetric cycles, the adsorption capacity of CO2 and conversion rate of CaO of adsorbents CaAl75p, CaY75p and CaSi75p in 25 cycles decreased gradually. However, the adsorption capacity of CO2 is always above 0.15 g CO2/g biomass, and the conversion rate of CaO is always above 30% respectively. Both data are much higher than that of CaOp, indicating that three adsorbents, CaSi75p, CaAl75p and CaY75p, have better cycling performance. In the enhanced biomass gasification hydrogen production cycle experiment, the volume fraction of H2 increases significantly after adding the above three adsorbent particles in five cycles, and the concentration of H2 increases from 46.2% to more than 60%. Addition of CaAl75p, CaY75p and CaSi75p could significantly increase concentration and yield of H2 in biomass gasification synthesis gas. The composition and yield of the gas change little during the five cycles, indicating that three kinds of adsorbents have good cyclic adsorption capacity and stability.