In response to the resource scarcity issues in space manufacturing，two technologies for recycling three-dimensional （3D） printed continuous fiber reinforced composites are proposed.The reverse melting drawing method is adopted to recycle the carbon fiber reinforced polyether ether ketone （CF/PEEK） composites.An innovative overcooling 3D printing process for polyphenylene sulfide （PPS） self-reinforced composites is developed，enabling the manufacturing and recycling of self-reinforced composites.The evolution laws of the microstructure and mechanical properties of the composites before and after recycling are studied.The recycled prepreg filaments are reprinted to obtain CF/PEEK samples，with flexural strength and modulus improved by 4.8% and 50.8%，respectively，compared with the original ones.The flexural strain of the samples printed by the recycled PPS self-reinforced composites is increased by 13.8% compared with that printed by the original PPS composites，and the toughness is significantly enhanced，achieving non-degradable recycling.Overall，a full lifecycle recycling and reuse strategy for 3D printed composites for space manufacturing is explored，providing support for the future development of space manufacturing.