This creation system is a kind of Pet guy rope device for having resonance sound box effect,Include an ontology,One music unit and a resonance source of sound unit,It include one first accommodation chamber system in the ontology for setting a rope body,And the music unary system is located at the upper surface ㄧ of the ontology,The resonance voice source unit system is electrically connected the music unit and is connected to first accommodation chamber,The space size that this creation mainly remains in the number of first accommodation chamber by the rope body length to change first accommodation chamber,The music for playing out the music unit changes with the size in the first accommodation chamber space.本創作係為一種具共振音箱效果之寵物牽繩器，包含有一本體、一音樂播放單元及一共振音源單元，該本體內包含有一第一容置室係供設一繩體，而該音樂播放單元係設在該本體之ㄧ上表面，該共振音源單元係電性連接該音樂播放單元且連通該第一容置室，本創作主要藉由該繩體長度存留在該第一容置室之多寡以改變該第一容置室之空間大小，使該音樂播放單元播放出之音樂隨著該第一容置室空間之大小而改變。
