The present disclosure relates to the field of automated composite material placement technology, and more specifically to a laser-assisted in-situ forming process using high-temperature inert gas shielding and an apparatus thereof. The process includes supplying prepreg tape to the laying site; heating the laying site with a laser; setting up an inert gas shield around the laying site and supplying heated inert gas to form a localized inert atmosphere, while the inert gas interacts with laser radiation through convective heat transfer to create a combined heating effect; and compacting the material using a compaction roller under the shield to achieve in-situ consolidation. The apparatus includes a laying head module, a laser heating unit, an inert gas shield, and an inert gas supply unit. By creating a stable, high-temperature inert protective environment in the laser heating and compaction zones.