The　space-air-ground　integrated　network　(SAGIN)　has　become　important　research　content　for　the　next　generation　of　6G　communication　networks.　Considering　the　difficulties　in　network　resource　management,　complex　network　service　configuration,　network　collaboration　and　security　sharing　pressure　in　network　construction.　A　novel　edge　computing-enabled　network　architecture　is　proposed.　On　this　basis,　key　technologies　such　as　software　defined　network　(SDN),　network　slicing　and　blockchain　are　used　to　solve　the　difficulties　in　network　system　construction.　Then,　the　proposed　architecture　is　designed　and　described　in　detail.　Furthermore,　the　key　technical　challenges　in　the　practical　application　and　implementation　of　the　proposed　architecture　are　further　explored,　providing　a　fundamental　reference　for　further　in-depth　research.　Finally,　simulation　experiments　verify　that　the　proposed　architecture　achieves　significant　improvements　in　terminal　devices＇　task　processing　energy　consumption　and　latency　compared　to　network　architecture　with　other　studies.　©　2024　IEEE.