A kind of artifucial limb attachment device includes a locking part, an ontology, a plug-in card unit and an elastic component. Locking part is in the shape of a rod. Ontology includes one first basal wall, one second basal wall and a surrounding wall. First basal wall and the second basal wall are respectively provided with a first through hole and one second through-hole. Plug-in card unit includes a plate body with a third through-hole, one supports what plate body and movably wear the push rod and a connection what plate body and the pressure section opposite with push rod of what surrounding wall. Elastic component is born against between what surrounding wall medial surface and pressure section. Push rod can be by toward close to the promotion of surrounding wall medial surface direction so that third through-hole and first through hole and the second through-hole are in a straight line, and compression elastic piece, and locking part can stretch through what first through hole, the second through-hole and third through-hole at this time, and make plug-in card unit homing by the elastic restoring force of elastic component, with sandwiched locking part.一種義肢連接裝置包含一鎖固件、一本體、一插卡單元及一彈性件。鎖固件呈桿狀。本體包括一第一基壁、一第二基壁及一圍繞壁。第一基壁及第二基壁分別具有一第一通孔及一第二通孔。插卡單元包括一具有一第三通孔的板體、一抵於板體且可移動地穿設於圍繞壁的推桿，及一連接於板體並與推桿相對的抵壓部。彈性件分別抵靠於圍繞壁內側面及抵壓部之間。推桿可被往接近圍繞壁內側面方向推動以使第三通孔與第一通孔及第二通孔呈一直線，並壓縮彈性件，而此時鎖固件可穿伸於第一通孔、第二通孔及第三通孔，並藉由彈性件的彈性恢復力使插卡單元回復原位，以夾置鎖固件。
