This creation system is a kind of flexible drawstring of pet,Include: a drawstring； The drawstring includes to stretch part as substrate using a flexible volume,And the flexibility volume is stretched part and can be made of silica gel,Two ends of the drawstring are respectively equipped with first,Two connecting pins,And what first,Between two connecting pins be equipped with present,Under the first bending segment of plural number for shifting to install and plural second bending segment,Drawstring can be enabled to show in the curved coiling form that prolongs,The elastic extension and reset function that the flexible volume of shape tool is stretched； Thereby,Using drawstring secondly end all tools crispatura self and stretch extension function,Can make to raise it is main between what pet,Have the autonomous control of bidirectional elastic extension,I.e. drawstring is flexible,It can extend automatically with the distance raised between main and pet,Especially to the pulling force that pet moment rushes cruelly,Then there is the buffer capacity of first time,And then the pulling force for avoiding pet moment from rushing cruelly,It causes to raise between master and pet and pulls injury.本創作係為一種寵物伸縮拉繩，包括有：一拉繩；該拉繩包括有以一撓性捲伸件為基材，且所述之撓性捲伸件可為矽膠製成，該拉繩之二端分別設有第一、二連接端，並於第一、二連接端之間設有呈上、下錯位設置之複數第一彎折段及複數第二彎折段，可令拉繩呈彎延捲繞形式展現，形具撓性捲伸之彈性延展暨復位機能；藉此，利用拉繩其二端皆具自體捲縮與拉伸延展機能，可使飼主對於寵物之間，具雙向彈性延展之自主控制，即拉繩之伸縮，可隨飼主與寵物間之距離而能自動延展，特別是對寵物瞬間暴衝之拉力，則具有第一時間之緩衝能力，進而避免寵物瞬間暴衝之拉力，造成飼主與寵物間之拉傷傷害。
