To provide an assembling circle for a pet which makes it possible for a pet to play with no lead and to shut out sunshine, rain, etc.SOLUTION: The pet assembly circle 1 to which the present invention is applied is for allowing a pet to play outdoors, and includes a core member 21 which can be developed or folded, and an opening portion A plurality of partition members 31 provided on the outside of the tent portion 2 and provided adjacent to the side end 31a of the partition member 31 so as to be adjacent to each other And a connecting member 39 to which the two partitions 31 are connected, the partitioning member 31 can be developed or folded via the connecting member 39, and the partitioning member 31 disposed at both ends is detachably mounted in the vicinity of the opening 23 And an enclosure part 3 enclosing the outside of the opening part 23 of the tent part 2 by being connected in a possible manner.(FIG.【課題】ペットをリード無しで遊ばせることが可能となり、日差しや雨等を遮断することが可能となるペット用組立サークルを提供する。【解決手段】本考案を適用したペット用組立サークル1は、ペットを屋外で遊ばせるためのものであって、展開又は折り畳み可能とされる芯材21と、芯材21に設けられて開口部23が形成されるシート材22とを有するとともに、屋外に設けられるテント部2と、テント部2の外側に設けられる複数の仕切材31と、仕切材31の側端31a近傍に設けられて隣接する2つの仕切材31が連結される連結部材39とを有するとともに、仕切材31が連結部材39を介して展開又は折り畳み可能とされ、両端に配置された仕切材31が開口部23近傍に着脱可能に接続されることでテント部2の開口部23の外側が囲われる囲い部3とを備えることを特徴とする。【選択図】図1