NOVELTY - Process using active carbon microsphere absorbent to store methane comprises (a) putting active carbon microsphere absorbent into reactor; (b) closing reactor, cleaning pipelines of reactor connected with each device; (c) heating active carbon microsphere absorbent by heating furnace, removing the impurity, vacuumizing, closing vacuum pump, starting the molecular pump to vacuumize; (d) starting methane gas source reducing valve, closing the reducing valve; and (e) reducing pressure to normal pressure by the pressure controller, releasing the absorbed methane to get methane gas.    USE - Process using active carbon microsphere absorbent.    ADVANTAGE - Using the absorbing method of the active carbon microsphere absorbent, the carbon dioxide content in the natural gas is reduced from 10.0% to 0.05% based on volume.    DETAILED DESCRIPTION - Process using active carbon microsphere absorbent to store methane comprises (a) putting active carbon microsphere absorbent into the reactor; (b) closing the reactor to make the inert gas pass through said reactor, cleaning the pipelines of reactor connected with each device; (c) heating the active carbon microsphere absorbent to 500-573 degrees K by heating furnace, removing the impurity, vacuumizing to 10-2 by the vacuum pump, closing vacuum pump, starting the molecular pump to vacuumize to 10-5 for 18-50 hours; (d) starting the methane gas source reducing valve, under the condition of 0.1-6.0 Mpa and negative 15 degrees C to room temperature, gas passes through the reactor filled with the active carbon microsphere absorbent by 0.5-0.8 m/second flow speed, closing the reducing valve when the absorption is balanced; thus the active carbon microsphere absorbent stores the methane; and (e) reducing pressure to normal pressure by the pressure controller, releasing the absorbed methane to get methane gas. An INDEPENDENT CLAIM is included for the process of using active carbon microsphere absorbent to remove carbon dioxide in natural gas comprises (a) putting active carbon microsphere absorbent into the reactor; (b) closing the reactor to make the inert gas pass through reactor; cleaning the pipelines of reactor connected with each device;(c) heating the active carbon microsphere absorbent to 500-573 degrees K by heating furnace; removing the impurity; vacuumizing to 10-2 by the vacuum pump; closing vacuum pump; starting the molecular pump to vacuumize to 10-5 for 18-24 hours; (d) starting the natural gas source reducing valve; under the condition of 0.1-6.0 Mpa absorbing pressure and negative 15 degrees C to room temperature, gas passes through the reactor filled with the active carbon microsphere absorbent by 0.5-0.8 m/second flow speed; the carbon dioxide is absorbed; closing the reducing valve to stop the absorption when the content of the carbon dioxide in the exhaust gas is raised, closing the reducing valve when the absorption is balanced; and (e) reducing the pressure 2.0 MPa to normal pressure by the pressure controller; thus the inert gas desorbs absorbent through said active carbon microsphere absorbent in room temperature so that the carbon dioxide in the natural gas is removed.