A kind of pet knapsack structure-improved,Its feature pet knapsack system described in what includes: an ontology,The ontology have be mutually linked leading flank,Bear face,Left side,Right side and bottom surface,This system is constituted to define in hollow three-dimensional shape and be formed with an accommodating space； An at least open portion,The what ontology pre-position is set,By the open portion system make ontology in can opening and closing of fault shape,Pet is placed in benefit； In the interconnecting piece of 3 configuration relations,The interconnecting piece system be respectively set what ontology bear face adjacent to top regional scope,Ontology bears regional scope and the ontology leading flank predetermined position of face adjacent floor,Constituting between each interconnecting piece is in 3 configuration relations； An at least harness,In predetermined band figure state,System is provided with engaging portion at the harness and each interconnecting piece opposite position,The engaging portion system and interconnecting piece are in combinable fixed or disassembly discrete state,When user by each engaging portion respectively in connection with what interconnecting piece when,System enables each interconnecting piece to pull ontology upwards by bearing harness movement； Thereby,When user bears the pet knapsack,By be between each interconnecting piece of what in 3 configuration relations,So that before ontology,Hou side and the different location of top 3 can be made ontology keep equilibrium state by upward drawing gravitation simultaneously,Use the comfort and stationarity when promoting portable pet in the pet what ontology accommodating space.一種寵物背包改良結構，其特點在於所述寵物背包係包括包括：一本體，該本體具有相互銜接之前側面、揹負面、左側面、右側面以及底面，構成該本體係呈中空立體狀而界定形成有一容置空間；至少一開啟部，設置於該本體預定位置處，藉由該開啟部係使本體呈可開啟或封閉狀，以利將寵物置入；呈三點配置關係之連接部，所述連接部係分別設置於本體揹負面鄰近頂部之區域範圍、本體揹負面鄰近底面之區域範圍以及本體前側面預定位置，構成各連接部間係呈三點配置關係；至少一背帶，呈預定帶體型態，該背帶與各連接部相對應位置處係設置有結合部，所述結合部係與連接部呈可結合固定或拆卸分離狀態，當使用者將各結合部分別結合於連接部時，係藉由揹負背帶動
