The invention discloses a helium low-pressure recycling, purification and storage device which comprises a pipeline system, a compression system, a filtration and purification system and a helium storage system, wherein the compression system and the filtration and purification system are communicated with the pipeline system; the helium storage system is arranged at the tail end; the filtration and purification system comprises a coarse helium filter, an oil-water separator, a dryer and a adsorption cylinder; the coarse helium filter is mounted on the air inlet pipe of the compression system; the oil-water separator, the dryer and the adsorption cylinder are respectively mounted on the air outlet pipe of the compression system. The invention further discloses a method for using the helium low-pressure recycling, purification and storage device to recycle, purify and store helium in an aerostatics. The helium low-pressure recycling, purification and storage device adopts a single-stage compression, low-temperature adsorption, and multistage filtering structure, so that the helium recycling and purification rate is high; in addition, the helium low-pressure recycling, purification and storage device has the advantages of simple and compact structure, simpleness and convenience in use, low manufacturing cost, portability and convenience in transportation.