A kind of power pet accessory with building block changeable type, which includes a support frame and a plurality of moving wheel sets arranged at the bottom of the support frame. The special structure of the joints and rods of the support frame is used to realize a type that can conform to the shape and shape of various pets. Pet aids that are customized for assembly and adjustment in a disabled state are easy and quick to disassemble and disassemble, and the assembled aids have high structural strength and will not harm pets or other people. Users can not only follow their imagination DIY is suitable for its pet auxiliary equipment structure, and it can also add various expansion function equipment or import artificial intelligence devices to make the use of pet auxiliary equipment more humanized and intelligent, and the pet owner can easily carry it when going out Or on-site assembly and disassembly, with the best practicality. In addition, when the pet accessory is not in use, it can also be directly disassembled as a recycling part for use by other pets to achieve the environmental protection purpose of unlimited recycling.一種具有積木萬變式動力寵物輔具,係包括一支撐架與複數設置在支撐架底部之移動輪組,利用支撐架之接頭及桿件的特殊結構,實現一種可依照各種寵物之身形及殘障狀態進行客製化組裝調整之寵物輔具,其組裝拆解皆非常方便且快速,且組裝完成之輔具結構強度高,又不會傷害到寵物或其它人,使用者不但可依照其想象力自行DIY適合其寵物之輔具結構,更可自行加裝各種擴充功能設備或導入人工智慧裝置,讓寵物輔具之使用更為人性化及智能化,且寵物之主人在外出時可方便攜帶或現場進行組裝拆解,具有最佳的實用性。此外,當該寵物輔具不使用時,亦可直接拆解作為回收零件供其它寵物使用,達到無限循環使用之環保目的。